Anger and resentment will prevent you from reaching that place of peace.
I'm sorry this has happened, it can't be looked at in terms of "fair." What truly is "fair?"
You have two choices really. To be at peace with this and allow it to grow you into a much better person, or to live with negativity and let it prevent you from finding your true self.
He is their father, that will never change. Would it help your children to give him what YOU think he deserves if he were to make contact? I think your better than that.
Remember, your children are watching, learning, show them, teach them to be better. Show them strength and grace.
