I have been hurt a lot by different ones over the years and after the initial anger/hurt I just forget about them. By hating and holding grudges against anyone I would allow that person to have power/control over me.
Noble indeed, but what about the person who comes back to hurt you again and again and won't go away? Such people certainly deserve whatever deterrent you can muster.
I have laid curses on such people and wouldn't hesitate to do so again; but I did attempt to make peace first.
GentlyFeral