But you said a couple days ago you never played elders?
There are still elders in the neighborhood, and my babysitters are elders.
Probably because TS3 is trying to move gameplay away from pee. Also, kids weren't awake all day in TS2, either. They tended to die really early.
I probably changed it in TS2, then. I figure kids should be full of energy and able to explore half the night, teens should be hanging out all night and snacking a lot and easily bored, adults should get tired easily and bored more slowly, etc. More fun that way.