that's the neat part, you don't get to choose, that's baked into the DNA you got spawned with

intelligent doesn't mean moral

i'm sure you've heard me speculate on the infant brain being printed to violence by violence... i think there was psychologists who speculated on this and probably studies that show several things, but the actual damage done to the human tendency of sympathy (to enjoy others pleasure and find others pain painful) is really the root of it

mothers are a big part of this, because they tend to be constant company for the infant until the walking days