I'll start. I got my first ST, a mega STE in 2008. Heh, not quite true. Until 1995 I had only one computer, the Atari XE. At that point I was 2 years away from the panhellenic exams (uni entry exams) and decided I wanted a new computer. At the time I had no clue atari was going bust etc and I was between the Falcon, the 1200 and a 486 pc. At the machines demoing, I saw a game on the 1200, some stuff on the PC and some 3d cubes and a multimedia presentation on falcon. Add brand loyalty to that and you get it. Brand loyalty, is bad but it served me well there. I could do almost anything I wanted on the falcon, from games (granted I didn't have access to the super cool pc games of the time, wing commander, x-wing etc) but it was fun. The productivity software got me till 2001-2 when I had to write my thesis and everything went smoothly. Then I got a pc.
Now, I must admit the falcon is little more than a gaming machine and demo viewer. But the little more is important too. I've spent many hours ircing with it, I use it for some science work (yes I am a scientist) and generally I try to find things I can do there that are not too slow, or too demanding to be done there. I found that doing some serious work at the Atari does add a fun factor there.
Your stories?