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

Some of you said that you pick the traits to fit the role or scenario, and I agree (especially if your Sim is to have a career or major hobby).

I too like the squeamish trait, it can be fun. Childish is also fun with adult Sims, especially if you put a dollhouse in the front yard--sometimes they will break away from what they're doing to go play dolls lol