Why don't we kill pedos?

Why don't we kill pedophiles and child molesters? I see these freaks bragging about being pedos or talking about kids they see in public all the time here on 4chan. Execute a few thousands of those sick shits and I fucking guarantee that shit will stop.

I've always wondered if we decriminalized drawn lolicon if it would help to prevent things like this from happening? If someone has a fetish like this and has no honest desire to hurt a child, wouldn't it be healthier to offer them something drawn (and therefore not hurting anyone) to fap to so they can get the desire out of their system instead of asking them to box it up continually until one day they snap and hurt someone?

Something like this might also work with other fetishes, like crushing (which is very much frowned up on, but still a paraphilia). In this manner, they can enjoy drawn or animated works which depict the things they want, but do no actual harm to anyone.

I don't know; personally, with all the millions of vile people on Earth, I find it hard to begin the string of condemnation with pedos.