Exactly the question I am asking myself all over again... But, whatever someone does that is considered a bad behavior, the root of that is in EGO. EGO is our worst enemy and we are not thought enough in our schools as a kid about the topic of EGO. 

EGO kills humanity, in one sentence. It literally destroys everything around you and making you feel better about it. It seems not that logical that you can do that, but EGO is that powerful. I know it's hard to see your EGO, and for someone, it's even hard to admit that they have EGO, but it's the ''thing'' we need to first learn about so that we can fight against. 

So, my blame falls to educational system that is shaping our kids into same boxes, killing creativity, not teaching kids about emotional intelligence and not teaching them about the EGO... and many other things...