Another detail about the myth you have to understand, in addition to all the sexual harassment of a child, is that Narcissus is a rape baby. He was born because Cephissus raped Liriope. That's his background for understanding the world of love. He exists because of an act of cruelty, which he is not old enough to distinguish from the sexual harassment he constantly suffers as a child because he was born pretty. Of course someone from that background, who has no feelings of love of his own, would end up resenting the very concept. I believe Narcissus was justified in telling Ameinias to kill himself, Ameinias was a pedophile and he was sexually abusing Narcissus with his harassment.