Why do humans have moral? An atheist might say "In social animals altruism and compassion are positive traits that will be selected for." This is obvious bullshit because if you were a primitive caveman who had compassion and altruism you would be defective, you would be slaughtered and your women would be raped by cavemen who are not compassionate or altruistic every single time. Only violent and barbaric genes would survive to the next generation.

Now ask yourself where morals come from.