Last things first. The theory that Columbine was retribution for bullying has been debunked. It was more about a psychopath wanting to do something even bigger and more deadly than the Oklahoma bombing. The main weapon was a miswired home made bomb which would have destroyed the whole building and most of the people in it. The shooting was originally intended to merely pick off the few people who managed to escape the explosion.

If smoking bothers you, don't patronize establishments which condone it. Vote with your feet.

As for being shot in the head, Gabby Giffords and her husband have not given up their guns, and don't plan to. I also don't see them calling for de-criminalizing shooting people in the head.

And firstly, I *am* my experiences. And how I'm wired. Somehow, I was wired to not let being punched in the nose a few times a month stand in the way of my self-esteem. YMMV, as they say.