What Sim character trait is most important to you, and why?

It’s hard to pick just one. I try to make each Sim different, and I have a LOT of trait mods in my game. I guess I use Good and Genius more often, though. I never use Evil or Hates Children. I have about 250 played characters now, so their traits help remind me of what I had envisioned each character to be when I created them. I love watching Erratic characters do interesting things and Childish characters play with their toys. I use Creative a lot as well.