I played violent, gore filled, shoot em up, kill em nasty games since I was 9.

Was it best for me?

Probably not

Did it make me a deranged violent person?

I would say no. I am a bit deranged but not much more.

I would say that those games are fine, just watch them play them, playing with them is even better. And if they say things or do things that bother you talk to them about it.

You might not be the coolest parent on the block, but you will be one of the more involved ones.