Me too. Every now and then I think of going back, but ever since Aardwolf I've had a personal rule that a game has to have an end. Which has successfully kept me away from all MMORPGs and other endless time sinks.
My rule is that a game needs to have an end (or at least a realistically achievable goal to work towards), or it needs to be a social experience that I exclusively play with my friends.
That's a good clarification. I do play with friends role playing campaigns that technically do not have an end, as the game master just builds the story forward. But I still put it to a same category as board games.