win 7 vs win 10

When code like Windows 7 reaches EOL (End of Life/Unsupported), this means as hackers discover exploits, there's never any fix for these exploits released.

So people talk about Bit Rot setting in, where code gets repeatedly hacked.

If you don't mind being hacked repeatedly, stick with Windows 7.

Otherwise, always update.

10 has a to  of new features. Some users will see, so me just make the life of It pros easier. But there are many. Too many to list. Even if end users won't use a single new feature  if the IT pro can do their job easier that saves the company money.

Keep in mind that windows 10 gets updated often. If you live on the bleeding edge, sure, it's less stable. If you are smart and wait for each subversion to be declared "business ready" then none of the things you listed is true. It isn't slower. It isn't less stable. It isn't harder to use or learn. And no, the free upgrade offer ended over a year ago.

I have used Windows 7 since it was created and I have found that it was very stable. However, Windows 10 has many advantages over Windows 7.  The ones I have noticed is that Windows 10 is fully supported now for most programs and has a much faster start up time over Windows 7 even for older machines. At first users jumping from Windows 7 to Windows 10 will have difficulty unless they understand how easy it is to hit the windows key and type in a search for whatever program they are looking for. Like David mentioned when Windows 7 hits EOL the hackers will have free range after the patches stop.

can you tell observable reasons why win 10 is better than win 7 ?

Windows 7 is better only if you have older Hardware on your PC, but very soon you have to change your hardware and move to Windows 10.

Cortana, Powerful voice recognition, Microsoft’s Edge browser, Security Improvements, faster Startup, more features  and more ...  are the benefits of Windows 10 and Problems are Old Hardware incompatibility and Slower on older hardware and the worst is you cannot control Windows Updates just like in Windows 7 you can do.

is it still possible to download free win 10 ? from where ?

yes, only if you have a Windows 7 license then go to the Windows 10 Media Creation Tool and select Using the tool to upgrade this PC from this link:
https://www.microsoft.com/en-us/software-download/windows10

Note: make sure to create a System Image Backup before upgrading to Windows 10,

Another reason is that Windows 7 is already out of standard support, it is currently in extended support. This means it will continue to receive security patches until Jan 2020, but not a host of other bug/stability fixes.

It was a brilliant OS but it is now 2 1/2 years out of support, it's time to bite the bullet and upgrade to Windows 10.

Now, the biggest advantage of going to Windows 10 is that this is supposed to be the last OS from Microsoft.  It will just be continually upgraded.  That's the theory.  (Consider me a skeptic on that point).

I have found it to be very stable.  Note that I am running on fairly old hardware (8 to 9 year old Dells).  I would recommend any older computers have their memory upgraded to 8 Gb if possible and be multi-core processors.

You can make Windows 10 more Windows 7 alike by using Classic Shell  http://www.classicshell.net/  Microsoft's tile interface sucks (&45(0!@-@#$%%%^)

Many of the initial issues with w10 have been resolved.  But there is still a little learning needed before its as comfortable as W7.  I seem to recall many of the same issues with XP folks going to 7.   Then, as now, the new version and features can be intimidating or confusing for non tech folks.    I'm not a fan of forcing people without good reasons.  You really need to scour the lists of new features (linked above) to find what particular nugget might entice a particular user.   Like with w7, as time went on, we learned to set up 7 to work more comfortably with the die hard XP crowd.  Same for W10 move.  

Keep in mind, before pushing folks...

Have them use a local windows account.  Using a m$ft online account just adds to the confusion -- especially if the PC encounters certain types of problems in the future.  Or, they use those accounts outside their work environment.

Although new features in 7 are pretty much done, at this point what new features does a 7 user really need?  

I do not subscribe to the scare tactics about 7 being more vulnerable to hacks.  m$ft will provide security updates as new threats arise.  

Some advantages, like booting faster, may not be so true on older gear.  

Some of that boot speed is due to w10 not completely shutting down, when you select shutdown.  "Fast startup (aka: hiberboot, hybrid boot, or hybrid shutdown) is a setting turned on by default in W10 that helps PCs start up faster after shutdown."    
See:  https://www.tenforums.com/tutorials/4189-turn-off-fast-startup-windows-10-a.html

Many of the new features, like some Windows (metro) Apps and many live tiles, can be annoying and confusing to clerical workers, managers  and knowledge workers outside the IT universe.  The last thing a nurse needs is an eMail or appointment interruption.   Or some annoying noise or autoplay video, or cortana reminder, or an xbox interface or rolling infotainment ticker etc.  

So fix it up front to make the transition less disruptive to the daily work and reduce the stress of the change.  Uninstall the foolish  stuff, like xBox and any Metros that won't work in your environment.  Then provide a list of some of the rest that could make sense and let them choose which they may want.   Turn off and hide or delete the rest of junk and you may see a bit less resistance.  

These PCs are tools to get work done!   Not gaming rigs, news stands, or stock broker offices.  These folks tolerate eMail and messaging as needed to get their job done.   They may have grown accustomed to certain apps, waysof doing things (like using libraries, or some project tracker, or expense/time reporter) make sure that stuff works like it did on W7.  Leave the toys to their phones and home PCs.

taking into consideration users are healthcare providers not experts at all with computers?

Your users will run into compliance issue within 1 to 2 years after the mainstream consumers will go for Windows 10.

https://www.netmarketshare.com/operating-system-market-share.aspx?qprid=10&qpcustomd=0

Up to now, the mainstream consumers are still using Windows 7 but the market share of Windows 10 has grown substantially since 2017.

Of course, some users are still using Windows XP now and it depends on whether your users need to access and exchange information from the Internet. Anyway, I do not think that a computer without an Internet connection is a computer these days.

can you tell observable reasons why win 10 is better than win 7  <-- Windows 10 is faster, more secure (by a wide margin), getting new features with every build, as easy to work with as Windows 7, and now is the only system available on most new computers.

Windows 7 was fine in its day, but I dumped it 5 years ago and now, Windows 7 is not in the game going forward.

>>  Windows 7 was fine in its day, but I dumped it 5 years ago and now, Windows 7 is not in the game going forward.   << yes and ain't that a shame they dump every OS after3-7 years??
only to gain more money for MS (just my opinion)
windows 10 requires much more mouse clicks to get things done - and was made for tablet users

only to gain more money for MS (just my opinion)

Yes. The OS upgrade is free and if you have a legitimate Win 7, the OS still prompt you for a free upgrade to Win 10 now.

The business model is changing for Microsoft and their motives is to capture the advertising money and sales of app in Microsoft App Store.

>>  The business model is changing for Microsoft and their motives is to capture the advertising money and sales of app in Microsoft App Store.

They've seen what Apple have done and are trying to emulate it.

It's a shame that this thread has devolved into opinions about MS and their business practices or how much money they make.  That doesn't help the op.

So to get things back on track, I feel I should correct a few things:

1) Windows 10 is no longer free.  Yes there are ways to "trigger" the free upgrade still (and no, they aren't particularly hard) but the free upgrade did officially end July 2016 and MS never officially extended it.  For a business, upgrading for free now is illegal (and suggesting to do so is against EE's policy), and while it might work, it'd put the business in a precarious position moving forward.  Please, stop suggesting this. Even the "disability" option was meant for personal use, not for business use, and the OP has made it clear this is a business in the health care industry.

Windows 10 is more secure than windows 7. To the person that said windows 7 is still receiving security updates, you are entitled to your opinion, but not to your own version of facts.  Things that windows 10 have that win7 doesn't include enhancements against pass-the-hash/pass-the-ticket, browser isolation via containers (win7 doesn't even have containers, so this wont' ever happen in a security update), credentialGuard to isolate credentials in memory....

I can keep going.  Security patches fix exploits that are already in the wild. That doesn't help against zero-day attacks.  The above help attacks from ever getting a foothold. These are not debated facts. These are well known protection barriers and are *only* in windows 10.

With that, I'm out.  Let the MS bashing resume. Sorry to interrupt.  I just wanted to actually help the OP instead of turning this into a cyber-political thread run amok.

Thank you so much to all Experts!
Very interesting.... now I have good reasons for both ways.
Best Regards!