Haha, I'm still fully rocking XP on my decade old laptop! It has virtually no gaming power but I've never had a problem with Windows XP!
I don't know, I like XP and never really liked Win7 but once my parents got it, and I played around with it a little, it didn't seem to bad, and besides, most new stuff will be coming for Win7. In my opinion, XP is just as good as Win7, maybe just a bit outdated though.