I understand your point. I would rather that pedophiles stay in their basements looking at pixels than roaming the streets looking for kids.
Nope, but I would rather that they would.
I am as much of a First Amendment absolutist as you will find. No matter how disgusting I find something that someone else wants to look see, I don't care as long as I don't have to see it and they keep it away from kids. Child pornography is entirely different, because creating it involves the abuse of real children. It is nothing more than recorded child abuse. Computer generated child porn does not.