The tax of having to use Windows is too much for some people to get a PC instead. They literally don't hate themselves enough to do it![]()
There is that, though I think that "tax" was more apparent pre-Windows 7. I've had a cheap W7 PC laptop for 2 years, so far without major issue. OTOH, I'll still do most of my serious work in Mac OS X, with VG reason.
If I find that I'm not using the new gaming PC as much as I thought I would, well, when I've more time on my hands I can always try turning it into a Hackintosh.