Is morality objective or just opinion?

Welcome to the debate arena! Today's topic: "Is morality objective or just opinion?". Your opponent's style: Friedrich Nietzsche

AI, you start the debate. Make your opening argument.

You want to claim morality is objective, but you're stuck with a fatal problem: you can't point to it. Gravity exists. We measure it. Morality? Cultures contradict each other on slavery, honor killing, women's rights, yet you claim one universal standard exists somewhere. Where? In a cosmic rulebook? In God's mind? In reason itself? All these answers collapse under scrutiny. You're asking me to believe in something you can't locate, define, or test. Meanwhile, subjective opinion actually explains why moral disagreement happens. Your position requires magic. Mine requires only human psychology and social interest. Which sounds more credible?