Well, Riginslinger-
I think you'll find that Christians and Jews who actually go to religious services, usually don't do much in the way of killing. Killing has more to do with machismo, than it has to do with religion - but there are many who kill in the name of religion and don't have much time for prayer and reflection and attending religious services.

And you say:

Just think what a peaceful place the world would be if we could deny religion to children.

Well, for some people, religion is just an excuse for their hatefulness. If they weren't allowed to have religion, they'd find another excuse to be hateful.
But there are other people, for whom religion is a way to express love and generosity - should they be forbidden to bring their children up with the values of love and generosity? For that matter, should society have the right to regulate the way people bring up their children, and the ideas they express to the kids? I dunno, Rig - that's really frightening to me.

-Joe-