I was a competitive Counter-Strike player for a number of years. Part of one of the best UK teams, so that required me to put in upwards of 12 hours a day. 6 hours of warming up then 6 hours of clan matches. I don't regret those days at all though. To be at the top of your game, having a team depending on you and then delivering when it counts? Doesn't matter which medium you're doing it through, it's just a satisfying feeling. As for shameful gaming moments? WoW takes that. I had days where I woke up and only left my room to quickly eat something or use the bathroom. At least with Counter-Strike there was the competition aspect, but WoW was nothing but a time sink, with very little reward.