So if you could receive an ironclad 100% guarantee you would never be enslaved, then slavery would cease to be objectively wrong from your viewpoint.Of course self interest is objective morality. If you don't want to be a slave it's immoral for you to make others a slave. AGAIN that has nothing to do with my feelings.
That's stupid, because that is self-interest, not objective morality.Slavery is objectively wrong because no normal person wants to be a slave.
Under the framework of objective morality, slavery is wrong at all times and all places, regardless of your personal opinions or personal circumstances.