The question I have is, why do people behave like Narcissus, then? Why do they need so much external affirmation? Why have some people become so extremely ins

The question I have is, why do people behave like Narcissus, then? Why do they need so much external affirmation? Why have some people become so extremely insecure? Question from a blind man. I know we are supposed to be so stupid that an elephant confuses us... So I have to ask simple questions, because otherwise I will likely not understand the answer, given how stupid we are.