Forgive me if I don't buy people are born with evil in their DNA people can and do become evil for various reasons but no one is born evil.Sad end to someone who had so much going for him. I don't get how people who have everything going right for them will destroy their life.
Dude was a homicidal manic. He didn't just make bad decision, he was born with evil in his DNA.
I believe evil can be a learned behavior, but I also believe for many people that commit murder against their fellow human beings there's a genetic component to their deeds. It's not a pleasant thing to believe, but I think it is true.