>>544034>why should I not believe in objective moralityBecause it isn't real, and if it is, there's zero actual evidence of it, let alone clues to its nature. An assertion's pleasantness is orthogonal to its truthfulness. It'd be fantastic if the way I wanted everyone to act was the Objectively Correct way that people Should act, but that doesn't make it true.
>when subjective morality means a moral system okay with eating babies is equally valid with one that doesnt do that.Why is that necessarily not the case with objective morality? What if the metaphysical moral authority decided that eating babies was Good, and that by abstaining from doing so, you're Evil?
Beyond that, even in the world of subjectivity, you don't have to accept people eating babies, or anything else you find unacceptable. If something bothers you, no justification is needed.