Sims smile too much
The constant smile and happiness is odd. I don't think sims feel REAL happiness if they are "happy" all of the time. I think fine should be the default emotion, it is more realistic.
Forum Discussion
I have always found that odd too. I have used a mod which tunes down facial expressions for a long time (bienchen's lessfacialoveraction mod). I think it looks much better, especially with idle animations when they are looking around. Sims smiling and looking left and right looks odd to me.
