I thought i'd try a mac after using windows for years, partly to see what they're really like and partly because i heard they're good for musicians. I've had it for over a year, and i've been pretty happy with it so far. Yeah, you pay a larger price, but considering the cost of running anti-virus over the space of a few years means the price difference isn't as much as people would have you believe (kinda like how a 360 is cheaper than a PS3, but paying for LIVE after a few years would make the 360 more expensive). And garageband is great, decent music recording software can be pretty damn expensive, so to have a program like that included for free definitely justifies the price for me.
One thing i don't get is how some people complain that macs are too expensive, PCs can do it cheaper, etc. But do people really give a shit as to how much someone else spends on their computer? I mean, really? And what's wrong with a computer looking good? I'd like to see more companies make products that were a little more visually appealing.