I argued before that morality can be and often has been the cause of a lot of evil in the world. The conviction of knowing what is good and right can lead to violent coercion of others who don’t conform to certain ideals. At the very least, moral certainty inhibits cooperation and compromise. Hence the claim by George Carlin:
I think motivation is overrated. You show me some lazy prick who’s lying around all day watching game shows and stroking his penis and I’ll show you someone who’s not causing any fucking trouble!