As we’ve exhaustively shown, “common sense” is the alignment of attitudes and beliefs by those that already hold them in common. Thus when we disagree on something that others may feel is “common sense”, we cannot appeal to “common sense” to settle the dispute because it is the very thing undergoing scrutiny.
And yet everyone does, Catholic or otherwise. We find it impossible to understand how anyone could have thought slavery or child labor or only educating boys, etc., was moral. In 200 years time, people will look back at us and find it impossible to understand some of our morality.
There is a very strong emotional content to morality. The Samaritan
feels pity. We can’t consciously calculate pity, we feel it. Just as we feel anger at injustice. The feelings well up from our unconscious - “the requirements of the law are written on their hearts”.
You may not like the messiness and may feel you have a better mousetrap. But Catholic or otherwise, atheist or otherwise, we’re not computers so you can’t amputate our feelings of common sense. After all, lacking or suppressing those emotions is a mental disorder - psychopathy.
*And for the umpteenth time, you can’t use Aquinas in a dispute with an atheist. First, he’s a Catholic theologian. Second, his “natural law” appeals to the self-evident metaphysical - which is rejected by a materialist approach. Additionally, as the metaphysical assumes the existence of underlying, driving deity, which an atheist also rejects, “natural law” cannot be used.
I’m sure we agree an atheist would likely find Romans 2 equally questionable.*
Nope, first Aquinas was a philosopher. He believed God is rational and so his natural law doesn’t need to appeal to divinity, it’s just as rational as any of the secular natural law systems you keep overlooking. Just as disputable, but not inferior in logic.
Your assertion that metaphysics relies on a deity is … just weird. We’ve been over this before. You’re wrong, everyone else is right. As per usual. You must be used to it by now. Nothing to see here, move along please.
I’m sure we agree an atheist would likely find Romans 2 equally questionable.
I think those verses (Romans 2:14-15) tally quite well with current theories. Part of our nature is to be motivated to be moral, and there are emotional and rational contents we sometimes have to wrestle to reconcile.