Voting on Windows 7 doesn't mean they agree with you at all, everyone has their own reasons.
@Mwah - Yep, that's life in general, linux fits me well so I use it, Windows fits others well aswell. I also agree they're all decent, anything is better than two rocks =P
So far seems like Windows is the most prominent operating system, probably because it's best supported on Windows. Predictable, but interesting nonetheless.