Quote by Dancing_Doll
I like happy, intelligent, quick-witted, energetic people who don't take themselves too seriously and know how to have fun.

Let's face it - everyone needs to be serious sometimes, but there are some types that pride themselves on it (as a defining trait) and yet aren't 'mature' at all. Sometimes they present with a holier-than-thou judgmental attitude, possibly caused by an unfortunate tendency to conduct their life's affairs with a giant stick up their arse. The underlying issue is actually often an inherent predilection to being completely childish in attitude and outlook. Those are the people I prefer to avoid.