You sound dismissive and petulant. Objective moral truths have to be real (or at least tractable if you're, e.g., a utilitarian) unless you're willing to make some very dubious concessions, such as: it's not morally and objectively wrong to hurt someone for no good reason.
Of course, some DO make such concessions (Singer being one of them), but I think that's just throwing the baby with the bath water.
Of course, some DO make such concessions (Singer being one of them), but I think that's just throwing the baby with the bath water.