My SA at school seems to defend Microsoft very staunchly, and jokes about Apple - it took us 2-4 years to get the Apple equipment we needed for the music and meda departments through!!
I feel that as an OS Mac OS X is probably one of the best around, certainly streets ahead of windows, but for the task windows has been set - to work, and work well on any possible configuration of hardware (within reason).
For my money, XP is certainly the best windows yet - and I do have a wide range of games I like to play on it... but within the next 10 years I intend to completely switch to Mac's for all my computer needs and buy a game console for my gaming needs...
And yes, I do realise this is old news... there's another thread, but I only just found it!