All those still depend on the idea that humans and life itself are more than just a long running, self-replicating electrochemical reaction which again pushes the burden of proof on to you.
Going back to the original response: you don't actually need to be a moral realist to observe (as in, witness with the globs of goo in your eyesockets) intersubjective ethics.
You don't have to agree with them, but it's a real phenomenon. It's up to you to decide how you handle it.
You don't have to agree with them, but it's a real phenomenon. It's up to you to decide how you handle it.