Well, as one who's had an Amiga since he was in 2nd Grade and it's still sitting here on my desk in front of me, though I'm not using it. I figured I'd share my two cents.
My reasons for staying around the Amiga and this forum are a bit unusual, but probably not too uncommon in the Amiga community. Like I said, my Dad purchased his Amiga 500 when I was in 2nd grade. The coolest thing I thought it could do is speak (especially when Dad it tell my Mom "Go Away Diane!"). The Amigas we had during my childhood, and now my early adult life, represented an oasis away from my everyday life. I can always go home and play games, or "fiddle" with something somehow, with the latter probably being the more important.
I simply got bored. In my late high school years, and through college, I switched over to the PC. I "fiddled" around with things by spending outrageous amounts of money on hardware, just to get it to play the latest game. More recently, I jumped over to the Mac world with iBook, which was more suitable, but it's "fiddle" factor isn't just there!
I came back to the Amiga about a year ago. Guess what? I'm still fiddling with the dumb thing! I had the best time a few days ago networking my A2000 with my Win98 pc to get it on the internet. That's why I'm hanging around the Amiga.
Why do I hang around this forum? Well - I figure in my years of "fiddling", I've probably figured a few things out about it, either software based, or hardware based. Heck, if I can help people solve a problem, I'm happy to share that knowledge. I hope that some others here feel the same, 'cause I'm likely to break something when I'm fiddling with the thing eventually!
As for the future of the Amiga - I know that there will probably be a time when my A4000 will feel like the C64 does to me when I play with it now, but that time hasn't come yet. This computer is still a productive, usable machine. After awhile, I'll probably end up with the new generation Amiga - but as for now, I'm finding new things to do with my old stuff every day. And enjoying every minute of it.
I'm extremely glad to see such a forum that we can talk with other Amiga users about the Amiga, and figure out what works for them, and share in the great wealth of knowledge out there in the broader Amiga community - modern hardware or not. Let's keep it up!