From my humble research, displacement aggression has significant benefits to well-being - despite its obvious moral issues. In a corporate setting, a higher-status person's choice to berate a subordinate reduces cortisol and elevates testosterone/dopamine. Why are good manners and kindness as pervasive as they are? Why has the percentage of psychopaths (those able to fake nice most of the time and lash out tactically) not risen relative to population size?