Think about it, many people are selfish which is why they kill others for money, property, status etc.
The People who are selfish degrade and demean others without understanding their feelings and their points of views.
The People who are selfish want their authority so that's why they hurt others so much.
The People who are selfish want to take away everything from others and take them for themselves.
Selfishness is also the reason behind the destruction of peace these days.
See, many problems arise from this stupid feeling of selfishness. I believe if we can get rid of this, world will be a whole lot better place to live in.
By the way, nice topic!