I started on an Apple II when I was just 5 years old...  I wrote my first program when I was 8 (a simple text database...) and began creating graphics when I was 11.  Went to the Commodore 64 at that time, then found girls.  A few years later in college, I started on mainframes in engineering school, and the PC environment...  I own a consulting company now at the age of 30, and I've been using Windows since August of 95.  I also work with Linux, but left the Apple world long ago, though recently have come back to it as it makes its presence known in the business community.