I kinda oscillate between exclusively playing one multiplayer game (SC2 at the moment) and marathoning a bunch of single player games in quick succession. I played a total of maybe 5 new single player games from '05 to '09 because I was so consumed by WoW. I don't think I've ever outright quit, though. I mean, I'd like to think that I'd spend more time reading or doing some other productive thing if I were to cut back on video games, but I'd invariably just end up pissing away even more time on forums