Obviously, there was a time when I wanted to play APB, All Points Bulletin, an MMO from the developers of Grand Theft Auto. Of course, after I had "been there done that," I lost all interest. It probably didn't help that I was playing the game in one of its earliest beta. That kind of state doesn't really promote a game in the best way, but the feeling I got still stood.
MMOs really rely on your ability to go out of your way and participate in a community, and the APB community was a fledgling pursuit some of the beta members were taking upon themselves. It was hard enough to play the game, why would I want to commit playing time to lurking the f0rums?
I guess I consider MMOs to be love-em-or-hate-em games, and I don't necessarily have hate for the genre, but I just won't ever see myself playing them.