"Human Nature" is a poor excuse for cruelty

One of my pursuits in life is to understand where and how humans are motivated to be mean, cruel and even nice. I pursue this mostly through reading, writing and introspection. I do nice things for other people because I enjoy being nice to others. I have been mean to others in the past, but I can tell you from personal experience, it wasn’t worth it. I simply could not sleep at night knowing I had slighted someone. So I comport myself in such a way that I can sleep at night knowing I did the right thing.