I like both, I don't think they're mutually exclusive. Macs are nice for the support and design. 90% of the people who buy then are people who don't know shit about computers and don't want to hassle with PCs.
If you know what you're doing and want to customize your shit, build a PC. Get a hackinstosh if you really want. But if you're like most people who just want a computer that works, looks nice, and has awesome support, get a mac. Big whoop. I have both.