As I've gotten older and more involved with other aspects of my life, the prospect of spending any more time than absolutely necessary to maintain my computers really pains me. Many times I feel like I work more for my Windows machines than they do working for me. With Mac OS X, it's almost always the exact opposite.
This is exactly how I feel about the issue. I learned a lot about computers from trying to make windows 98 work properly. XP was much better, but the tweaking, the reinstalling every 6 months, etc. These are not things I want to do anymore.
I don't mind windows. I think there are some nice things about Vista, but it's just not my time to mess around with these things.
Still, OP, good read.