People who claim to enjoy metalcore clearly are not right in the head.

The best solution for them might be to enslave them and manage their affairs.

Specifically, forcing them to listen to early Judas Priest until the fog drops from their eyes.
I agree, we should Zyklon B them. Along with all the other people who listen to music I don't like.
I fell asleep on my arm once, scariest thing that ever happened to me. I thought it was kill.