I only use Windows for games. But so far I'm quite content with Linux in gaming. Thanks to +Humble Bundle
, I play HL, TF2, HL2:DM, Serious Sam BFE, and a whole lot of indie games (only my favourite, Killing Floor, which is based on UE2, s**ks on Linux). I alternate between OSes every weekend or so now. Put the whole HL2 series and Portal 1 and 2 and I'm not touching Windows for 6 months. If I would have been into A Tale in the Desert
like my bro, no Windows for a year. Port a couple of good MMOs like +Vindictus
and I'll seriously ponder ditching Windows and not think of Windows 8 at all.