I never, ever give my Sims the Active Trait because I hate when Sims start doing push ups and sit ups out of no where. Are there any traits that you avoid giving your Sims and why?
Story-wise it can be interesting. For example Bella Goth has the 'good' trait, her son who's also a super spy the 'evil' trait. (In my game) His sister has the 'evil' trait. They will be sitting there plotting something evil and doing the evil maniacal laugh as their mom walks by... :D