Interesting thoughts. Definitely agree that morality comes from people, and specifically their interactions with each other. Although I would additionally clarify that in my case I consider morality (as opposed to a simple action decided by personal gain or benefit) comes from the interaction between sentients where one or more can act on another based on knowledge not only of their own state but the state of that other. This is because I consider any sentient to have some nonzero moral value to me, but am not sure if I would consider all of them persons. I am comfortable thinking of an ape or a dolphin as a person, but I think I do not give a mouse the same status. Nevertheless, I would feel some amount of moral wrongness involved in causing unnecessary pain to the mouse, since I believe such creatures to be sentient and therefore capable of suffering.
I'm not sure how the rest of my morality compares to yours, though. I don't think there is any one morality, or indeed that moral facts exist at all. Now, this does not mean that I subscribe to multiple moralities, especially those whose actions and consequences directly contradict each other. I simply believe that if one of my highest goals is the protection of sapient life, and someone else's highest goal is the destruction of it, I cannot necessarily expect that I can ever show them, with any facts about the world, that their morality is wrong. I could only say that it was a fact about the world that their morality is in direct contradiction with mine.
Now I don't believe that anything I've said above about morality (which was mostly metaethics anyway) precludes my existence or anyone else's existence as a moral actor. In fact, all people, by their capability to make decisions based on their knowledge of the present state of others, and their ability to extrapolate that state into the future based on their actions, are automatically moral actors in my view of things. I just don't necessarily think they always act in accordance with their own morals or have morals mutually compatible with my morals.
Nevertheless, I think that facts are very useful in discussing morality, because sometimes people are not actually in disagreement with each other's highest moral goals--they simply have a disagreement about facts and if that can be resolved, they can agree on a mutually compatible course of action.
My meta-ethics are basically that of Luke's Pluralistic Moral Reductionism. (UPDATE: Elaborated in my Meta-ethics FAQ.)
However, I was curious as to whether this "Pluralistic Moral Reductionism" counts as moral realism or anti-realism. Luke's essay says it depends on what I mean by "moral realism". I see moral realism as broken down into three separate axes:
There's success theory, the part that I accept, which states that moral statements like "murder is wrong" do successfully refer to something real (in this case, a particular moral standard, like utilitarianism -- "murder is wrong" refers to "murder does not maximize happiness").
There's unitary theory, which I reject, that states there is only one "true" moral standard rather than hundreds of possible ones.
And then there's absolutism theory, which I reject, that states that the one true morality is rationally binding.
I don't know how many moral realists are on LessWrong, but I have a few questions for people who accept moral realism, especially unitary theory or absolutism theory. These are "generally seeking understanding and opposing points of view" kind of questions, not stumper questions designed to disprove or anything. While I'm doing some more reading on the topic, if you're into moral realism, you could help me out by sharing your perspective.
~
Why is there only one particular morality?
This goes right to the core of unitary theory -- that there is only one true theory of morality. But I must admit I'm dumbfounded at how any one particular theory of morality could be "the one true one", except in so far as someone personally chooses that theory over others based on preferences and desires.
So why is there only one particular morality? And what is the one true theory of morality? What makes this theory the one true one rather than others? How do we know there is only one particular theory? What's inadequate about all the other candidates?
~
Where does morality come from?
This gets me a bit more background knowledge, but what is the ontology of morality? Some concepts of moral realism have an idea of a "moral realm", while others reject this as needlessly queer and spooky. But essentially, what is grounding morality? Are moral facts contingent; could morality have been different? Is it possible to make it different in the future?
~
Why should we care about (your) morality?
I see rationality as talking about what best satisfies your pre-existing desires. But it's entirely possible that morality isn't desirable by someone at all. While I hope that society is prepared to coerce them into moral behavior (either through social or legal force), I don't think that their immoral behavior is necessarily irrational. And on some accounts, morality is independent of desire but still has rational force.
How does morality get it's ability to be rationally binding? If the very definition of "rationality" includes being moral, is that mere wordplay? Why should we accept this definition of rationality and not a different one?
I look forward to engaging in diologue with some moral realists. Same with moral anti-realists, I guess. After all, if moral realism is true, I want to know.