I think for similar reasons, I think of morality as descriptive rather than philosophical. That is, humans have certain moral sentiments, on average, that have evolved in to place because cooperation is so darned important a part of the survival advantage of humans. Attempts to instrospect on the moral feelings and derive "ought" from them are a side effect of the sentiments and rationality that has evolved to serve humans so well. Looking for general moral truths beyond "this is right because it feels right" is at best besides the point and at worst impossible.