I'm saying that we can't determine them, and therefore, they can't exist. How do you think we can determine objective moral values?
The existence of object moral values can be true regardless of whether we think we can determine them or not.
Not at all. Not believing in objective values doesn't rule out subjective moral values, and subjective moral values would indeed be influenced by whether something is socially unacceptable or harmful to humanity.
You can't categorically say that the Holocaust was objectively wrong.
That's not what I said. If the Nazis had taken over the world and convinced everyone that the Holocaust was the right thing to do, there wouldn't be anyone to judge it as morally wrong, so how could objective moral values possibly exist? On some supernatural plane that would have no influence and make absolutely no difference? What is the point?
My point is that regardless of human opinion the acts of the Holocaust are really wrong.
As do I, but that doesn't mean it's anything more our subjective opinions.
No, that would be objective (the clue is in "regardless of human opinion").
I find that rather ironic.It's not making up a purpose or convincing ourselves, but truly finding what we want to achieve and what makes us happy, and how best to live our lives.
You said earlier... "it means that we create our own purpose."
Are you making up purpose or not?