To add to this, injustice usually provokes a reaction which may in the extreme cases, result in death. In Northern Nigeria for example, anyone who steals has his hand severed off if cut. This is even worse in the East where thieves arecompletely burnt to death
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Don't ask me if I support this or not, but I think it is not unrelated to the rewarding feeling achievable from purnishment of injustsice perpertrators according to your post
Punishment has degrees of severity. Cutting off hands and burning alive are too extreme, if you ask me :/ Yes, I'm sure some people feel good and that its rewarding to do these things...