“They, like us, want the rule of law, fairly and justly administered where those violating the laws are caught and given appropriate punishments. At least I think we want that.”

I want a society where the vast majority of people can self-police (don’t violate the law in the first place) because they understand how the law you talk about works. The occasional genetic outlier would be quickly dealt with with a lot of mercy and compassion since such person needs help more than punishment.

https://senderspike.medium.com/new-world-order-b1cf6e4deb8

“Where does our strong sense of justice come from? Why are we so angry and frustrated when someone steals something that is ours, tells lies about us, harms one of our loved ones?”

This is pretty obvious, isn't it? At best it's unpleasant, at worst it threatens your very existence. So, you are in the realm of likes and dislikes.

“This is an argument for good and evil as real, or as “ontological” as the philosophers would say.”

I understand that old habits are hard to break, but there is nothing ontological about good and bad. Omnibenevolence precludes it. However hard it is for you to stomach, in the end, what you call morality (though that too is just a word) is a causal affair (not relative, not ontological, not always causally reciprocal). You probably already saw this article, but here I go again:

https://senderspike.medium.com/the-problem-of-evil-569af1681d97