Those who believe the most strongly in morality are the ones who engage in it the most. Or to put it another, those who love the most also hate the most.
When you're an evil person and someone kills your best friend, you applaud and check the corpse for loot. When you're a good person and someone kills your best friend, you swear a vendetta for life, track the evil guy down, tear him to shreds, and piss on the pieces.
Evil doesn't care, good -has- to care. I'd say a goodie should be rabidly hating on any character whose tried to kill him or his friends in the past.
This is a common complaint, however, from a certain part of the playerbase. Let me guess: OP is playing a nexun and whining about how goodies won't forgive him for trying to kill the people the goodie is sworn to protect.
How quaint.