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

I randomize them unless I've got a specific sim in mind and I'm creating them from scratch in CAS. However, I do agree that the traits mean and do very little. There are a few small interactions as mentioned but mostly they don't have much of an impact in their day to day lives. They're mostly there to remind me what personality they should have play out in my imagination.

All sims born in game get random. That's just my rule.