I'm a relative newbie, compared to the rest of you.
In 2004 I met my (now) ex girlfriend, who had a G4 iBook. I liked the look of it, but I was still skeptical of the OS. Then, I opened Terminal. Wow. Unix.
ibook-g4:~ Alana$ ls -laF
wow!
ibook-g4:~ Alana$ top
Wow!!
ibook-g4:~ Alana$ uptime
W O W. 3 weeks?!?@$#
My interest had been piqued.
I started work at a campus computer store at Dalhousie University in Halifax, Nova Scotia in October of 2005. I had never paid much attention to Apple as a whole before that, except for my 4th gen iPod 20GB. Anyway, Their G5 Power Mac really caught my attention. I put Halo on it and watched the frames fly. I had a really good chance to mess around with the OS, and the guys there are really Mac-enthusiastic. I set my sights on a 17" PowerBook. The head of administrative computing had one, and he let me surf the web for a bit on it, and I loved the screen.
As fate would have it, someone from the computer science department ordered a custom 17" PowerBook with 1GB in 1 chip, so it wasn't returnable. He put down ~$400 as a deposit on it. He canceled his order, but it was too late, the PB had shipped. So, we had a sweet 17" PowerBook sitting there. Literally sitting beside me while I worked.
I worked out a deal with the guys, so I saved about $700 or so. Cost me $2600 after tax with a second GB of RAM. After that, I convinced my parents (over the phone), who are usually pretty weary of new things, especially (relatively) expensive new things, to purchase the new CD iMac once it came out. They obliged, splurged $1600 and now that's our main home computer.
I will never, ever buy a Windows-based PC again. I may however buy a Dell to run Ubuntu. Just as a hobby, of course.