Well, the title of this post says it all. I'd say I spend a good 10-15 hours per week playing TW games. It can be less depending on how much life interferes. On the other hand, I can "binge" play and lose virtually an entire weekend if left alone.
As a disclaimer, I will say that I work, lift weights, have a wife, read daily, and travel often. Also, I watch almost no TV except American football, UFC, and Family Guy.
Just curious about everyone else.