Personally, when I'm in Create a Sim there are certain traits I always skip over and never give a thought to, because I don't see how they'll add a whole lot of enjoyment to my game. I always skip absent minded, because I don't want my Sim to be in the middle of doing something then go off a-wandering; hydrophobic, which because I've not played it I assume means my Sim would end up smelling a lot; never nude because once you've seen a Sim shower with a bathing suit/clothes on once it sort of stops being funny the second time, and for some reason I always skip over Good. I don't think that's necessarily because I think it's a low impact trait, it's just one I always pass over.