Justice needs more than this because victims will wish for harsher punishment. The public will not feel satisfied and trust in the justice system will lessen, e

Justice needs more than this because victims will wish for harsher punishment. The public will not feel satisfied and trust in the justice system will lessen, etc. You can tell people but you can't honestly expect the whole of society to just become "enlightened" about this. Desire for vengeance is a thing, it lives in us, and even though I can personally (usually) rationally decide to let it go, I feel it's still there and when I'm angry, quite prominently so. It's not a good thing, but you can't just ignore it. Justice needs to deal with this, otherwise it won't be accepted. Fortunately this desire isn't very smart and can be tricked easily. If you paint something as terrible punishment and people see it as such, that is enough. Unlike, say, public safety, it doesn't actually need to be real to fully benefit society.