Comment by EMIRELADERO

Well, good thing we don't live in any time prior to 1800! What even is that answer? Of course premodern societies would appeal to different aspects of human nature in different ways. The question is whether a society can sustain its own survival and welfare even when certain facets of human nature are frawned upon and discouraged. I see no reason for doubting that this is the case for the retributive instinct, at least when killing is involved.