I am always surprised that there are still Americans trying to assert a moral equivalency between the West (Christendom) and the rest of the world, particularly the Muslim world.
Christians are not immigrating to the Muslim world. Ask yourself why. Ask yourself why they are coming here.
Slavery has existed in every civilization. Christendom was the first to eliminate it. The Muslim world is still rife with it.
The West isn't killing Muslims because they are Muslims. Go be a Christian in much of the Muslim world and see how that goes..
Nevertheless, if we are going to stack each civilization up against each other, history is quite clear that Christendom has nurtured far more peace than any other.
Particularly when you look at the world since WW2, Christendom is responsible for the greatest peace, prosperity, liberty, and opportunity the world has ever known. That's why people are flocking to it, not running away from it.
Indeed, if the wars of the first half of the twentieth century are evidence of anything, it is the hell on earth that men create when they stop believing in Christianity.