What do you not understand about humanity?

Well...there are a lot of things I don't understand, but maybe I'm just weird in that way :)) I don't understand why some people accept that what they know at this moment is enough and don't try to learn new stuff and be better tomorrow than they are now. I don't understand why some people choose to ignore creativity and event think that creative people are childish or even stupid. And also, I don't understand why lots of people choose to be jackasses and act accordingly to others when it would be so easy do not do this.