The idea of morality is idea of wise human and wise humanity – idea of a person in peace with oneself and with others, which has overcome his own silliness, and the silliness of the society. Which has overcome his own hate, fear, urges and the hate, fear and urges of the society.
By taking such view of objectivity of what is moral one can throw away any relativism as opinion of those who are not wise enough to accept wisdom, without bothering much with rational claims and logical proofs which limit themselves on level of simple concepts which can’t “grasp” the level on which concept of morality makes sense – the holistic level of the life in society with all its delicacies which is far away from a simple formalism based on simple concepts.
For sure morality has to do with such “simpler” concepts like needs, pain, pleasure, believes, thoughts, and so on… but moral behavior isn’t just simple sum of those, it isn’t some aggregate in which those are glued one to each other by rationality. Morality is connected to the being whole of the person, being aware of all those things and in which those appear merely as more or less important parts. Morality is taking the human in its whole as he dwells in the society. As such morality can be handled only by ethics, or by such philosophy which has came to give picture of the human and humanity in its totality.
As a holistic comprehension within oneself morality is more intuited and felt, then constructed and logically believed, and is accessible for the most learned ones as much to those who are not learned at all.
This doesn’t mean that behavior is not to be discussed and criticized, but such talk has value only among people who want to do what is right, who have already got to the level where they got to be moral person, and which now trust each other in wanting to do the good thing, not because doing so is rational thing to do, but because it is connected to that holistic and wise comprehension of what is to be human in a society.