User blog comment:B214/Chapter 504: Rift/@comment-27337151-20161001212600/@comment-5303512-20161002173633

Humans are prone to be irrational in times of their greatest vulnerable states. It is basically our oldest and most natural response to situations like that, to instinctively seek revenge against those who would do you wrong. Unlike hate because someone told you to hate or a doctrine to make you hate, those things are learned and can be unlearned, while instinctive hatred cannot be, it is part of us, when someone we love is taken from us, that is the most natural thing to become of us. However, if a person can rise above that, then in a way, that is becoming a better person than what you would be.

Also, reminder that Gray's Demon Marks corrupt him so that doesn't help him be rational.