And they're silly. Just because a game isn't violent doesn't make it bad.I really like playing The Sims 3, I find it really relaxing. Most people just laugh in your face if you say anything though.
Also, it probably suffers from that silly "casual" stigma like Angry Birds and Bejeweled. Like Jim Sterling said, Angry Birds is not a bad game.
Personally, I think more people need to make Social Simulation games. There's only a small handful in comparison to say, the loads of first person shooters that are being released.