I'm confused about the 'what if' aspect of the question. Is this if the Amiga never existed? Or if all the Amigas in the world suddenly vanished and we all had to use something else?
Well, for the former, I'd probably be using an Atari of some sort. Note that I've never used one before, but it seems like it would be the best upgrade from the C64 (which my family used in the pre-Amiga days). It also keeps with the trend that virtually every technology we've invested in turns out to be a commercial failure ;-)
For the latter, I'd probably make the switch to Linux or MacOSX. I've said in the past that I hate Linux, but I'm trying to get to know it better so I'll like it more. (As an Amiga user, I feel that there's just too much that needs to be configured manually. Once I get over that problem I expect I'll like it). MacOSX currently seems like the most Amiga-like system in basic operation theory: Mostly automated, with the possibility to take over operations manually.
I haven't used too many other systems, so I don't have much to compare to. Anything's better than subscribing to Redmond, though.
