Maybe there are no moral absoultes. Maybe people want to believe that their system of morality is based upon some absolute unquestionable authority because that makes them feel more justified or more secure in holding to their morality so they ascribe them to a God who may or may not exist.
Maybe there are no moral absoultes.Then, by necessity, moral's are relative. You like vanilla, I like chocolate.
Both Jesus of Nazareth and Pol Pot were right, relaitively speaking.