Aside from your crudity, you leave unexplained why we have any reason to believe the lessons learned from our mothers are right, if both we and our mothers are merely primates evolved to fit a niche in the African savannah.
-- how can you claim to have explained morality in any sense, with or without the supernatural?
We all learn basic morality [the golden rule] at our mothers breast..
-- Don't bite the mammary gland that feeds you.
All other variations on morality follow.. Nothing supernatural about it.
Aside from your crudity, you leave unexplained why we have any reason to believe the lessons learned from our mothers are right,
You don't agree that the golden rule is "right"? How sad. Is that part of your 'supernatural' theory?
if both we and our mothers are merely primates evolved to fit a niche in the African savannah.
While its true that all us primates learn 'the rule', - you yourself demonstrate why we have so many problems with moral conduct. - To me it's self evident, - it's very immoral to bite the gland/hand that feeds you. 'Do onto others' is basic morality in my book.
Why do you object?