the amiga magic is ofcourse different for each of us. but because of that I guess its the perfect mix between gaming, productivity (at least in the beginning) and creativity.
I bought my first a500 only for the games (lotus 1 did it for me) but soon I was playing around with protracker, dpaint, even some basic programming stuff. soon enough I saw my first demo's and was convinced about the amiga way of doing things. when I got online the aminet and active community and creative ways of keeping up with the pc and mac is what kept me going.
nowadays its nostalgia coupled with that same community and the fun of doing things different and more efficient than other platforms. just see what you can do with only 1,2 or 8mb, its incredible! also, the fact my current amiga could still be housed in its original 'keyboard shell' while being just as powerful is a kind of magic, too. same goes for the c64!