yes. there isnt any way to stop criminals.
There is actually. It's called "MDMA in the ground water" and/or raising children properly so they'll raise decent children. Easier said than done though.
I agree, it's all about upbringing. many programs analyze the behavior of maniacs and murderers, and everything comes down to the problems of childhood, psychological trauma, that is, not proper education. Therefore, when the society will interisovatsya how to properly educate children, and learns this, there will be less killers and maniacs in the world. So educate the children correctly and the question of the death penalty will not stand.