If most musicians don't want to trawl thru forums/manuals etc and set up computers (PC or Atari...) then they shouldn't buy a computer system of any flavour as there's plenty of stand-alone 16/24 track recorders on the market.
A very good friend of mine has gone down that very route recently on the grounds that he doesn't want to bog himself down in computer gookese for several years. This is very sensible. He knows what it is, does and he's done and dusted. He thinks , quite rightly, that the computer route for him would be abject stupidity because he also does not want to mess with drivers or manuals unduly and he knows that if he did it would be useless blaming whatever flavour of computer he opted for. Who needs to learn Russian to read War & Peace when there's a version in your own language?
And, for the complete naughtiness, all Mac users have to defend Mac and denigrate others because their systems cost so much more for just as flaky a product.
Ha! Well maybe that's true, I don't know! I got my mac free from my last job. I probably wouldn't have considered buying one until having spent some time using one. It really surpassed all my expectations. XP/vista seems very clunky in comparison.
Really, its not in my interests for macs to become any more popular as they will become a serious target for hackers and cyber criminals and I'll have to worry about virus checkers and security updates, which I have to do on my PC already.