The Gaming Experiment

I used to play World of Warcraft pretty regularly. Every night after work, and all day weekends. I stopped a couple months ago, but I got the urge to get back and play. I had a lot of fun with it, and my character was pretty decked out with equipment from some of the high level raids. I guess my relationship with WoW could be considered a love/hate relationship, I love the game, it's fun and can be entertaining. I hate it because it really takes up all my time, and I am unable to do much else. WoW is probably the biggest contributing factor for me starting this experiment.

With some of the changes that have been announced in the next content patch, I am really wrestling with the idea of starting up again.

Are there any games that you've had this kind of love/hate relationship with?

P.S. I haven't caved yet.