Same with compassion. Or sacrificing your life for others.
Then we get into “how did we evolve he concept of ‘aught’?”
I’ve heard some pretty weak evolutionary explanations for “ought”.
CS Lewis pretty much destroys these with the question
“if we know what we ‘ought’, then why do we want to do otherwise?”
In other words, if “ought” is evolutionarily “wired” for a survival instinct, there should be no tendency to do otherwise, as that would be counter to survival.
1. If morality is subjective (by individual or group), as atheists/materialists claim, then what any individual/group ought to do is necessarily relative to that individual/group purpose. IOW, if my purpose is to make a frozen margarita, I ought put ice in the blender. If my purpose is to make fresh peanut butter, I ought not put ice in the blender. The ought-ness of any task can only be discerned by mapping it to the purpose for which the act is committed. Under moral subjectivism, acts in themselves are just brute facts with no objective moral value; they must be mapped to the subjective purpose to determine subjective moral value (oughtness).2. The question “Is it moral to gratuitously torture children?” implies that whomever does such an act finds it personally gratifying in some way, and we are asking a third party if the act is moral or immoral. The only possible, logically consistent answer a subjective moralist (atheist/materialist) can give is that yes, it is moral, because the moral challenge is tautologically valid in the subjective morality model. If my purpose is to gratify myself, and torturing children gratifies me, there is a 1 to 1 mapping of act to purpose- I ought do so. It is moral by definition for anyone who is gratified by the act to do so for their own gratification.
3. If the moral subjectivist says that the act is immoral “to them”, they are committing a logical error. The acts of others can only be morally evaluated according to that particular person’s subjective purpose, not according to the subjective purposes of anyone else. That is the nature of subjective commodities and relationships. Whether or not it is something a third party “ought” do for their purposes is entirely irrelevant and is treating the third party’s purposes as if they are objectively valid and binding evaluations on the acts of others.
4. Would an atheist/materialist intervene if someone else was gratuitously torturing children? If they had the power to snap their fingers and eliminate this kind of activity from the world, would they do so? I suspect the answer to both would be: yes. Note how self-described moral subjectivists would treat their own personal preferences as if they were objectively valid and binding on others.
5. Only a sociopath can truly act as if morality is subjective. “Moral subjectivism” is a intellectual smokescreen. It is a self-deception or an oughtright lie. Its proponents cannot even act or respond to questions as if moral subjectivism is true. They betray themselves as closet moral objectivists in denial, hiding from the implications of a morality they must live and act as if objective.
William J Murray
Joel Marks, Professor Emeritus of Philosophy at the U. of New Haven, who for 10 years authored the Moral Moments column in Philosophy Now, made the following statements in a 2010 article entitled, An Amoral Manifesto.
This philosopher has been laboring under an unexamined assumption, namely that there is such a thing as right and wrong. I now believe there isnt The long and short of it is that I became convinced that atheism implies amorality; and since I am an atheist, I must therefore embrace amorality I experienced my shocking epiphany that religious fundamentalists are correct; without God there is no morality. But they are incorrect, I still believe, about there being a God. Hence, I believe, there is no morality.
Marks then quite boldly and candidly addresses the implications of his newfound beliefs:
Even though words like sinful and evil come naturally to the tongue as say a description of child molesting. They do not describe any actual properties of anything. There are no literal sins in the world because there is no literal God nothing is literally right or wrong because there is no Morality yet we human beings can still discover plenty of completely naturally explainable resources for motivating certain preferences. Thus enough of us are sufficiently averse to the molestation of children and would likely continue to be ( An Amoral Manifesto Part I )