In my opinion, mac computers are a load of crap. Sure, they look good... but then, you look at those prices! Why should such little specs on a computer cost SO MUCH? I would consider buying a mac if they didn't get all caught up with themselves and have huge prices. Also, what about those commercials? They use false advertising, claiming pretty much that only windows computers can get viruses. That's just bullshit.. Both windows, and mac computers can contract viruses... Although it is true that Windows computers are more highly targeted when it comes to viruses (due to the higher percentage of users), it does not mean that you will always get one. For all the people that haven't heard of something called anti-virus, maybe you should consider that instead of dropping $3k on a shitty computer. Just my advice..
Macs do last longer than your typical consumer Win machine. Assemble a durable PC (Win, *NIX, whatever) and prices will not be a lot lower than Macs cost.