I'm not a saint, I can be pretty selfish in my reasons for treating people well.
I just want everyone taken care of because I want to live in a society that takes care of all the people. I want good education because I want to be around well educated people. I want healthcare for everyone because I want to be around active healthy people who live to old age. I want limits and regulations for companies because I want clean air and safe products.
It's not fucking rocket science.