Capital punishment and brutal punishments never did deter the truely desperat, who are usually squeezed by society and physics. And yet, they continu existing.
https://www.dartmouth.edu/~chance/teaching_aids/books_articl...
Our brain creates a raging feeling, that demand pain to be treated out to percieved wrong doers.
That the wrongdoing might have been to set children in a world with no jobs, no future and no proper parenting, is ignored.
That it is applied without deterence or change of effect. Ignored.
Just a animal scratching a itch, no matter what.