Very much incorrect on one point. Humans are terrible because other humans are terrible to them at an early point in their life. It isn’t a flaw of being sentient.
Yes, childhood trauma can be the cause of a lot of mental health issues in adult life, but attributing it to all human shitty behaviour is a wide sweeping brushstroke.
More so than the prior comment? Hurt people hurting people has a whole lot of research supporting it?