If, however, some of that behaviour is driven by evolved hereditary behaviour in a species, then it comes into the picture as (at least) a strong predisposition for certain behaviour always being considered "moral" for that species.
Do you agree then , taking your above statement as a basis for identifying moral behaviour ,it would be apparent that some parts of the population would have a strong predisposition for immoral behaviour , and thus your logically derived moral code is discriminatory ?
Practically any behaviour can be lawful or unlawful irrespective of whether it is moral or not, imho.
I would totally agree with you here , which is why I believe it is important to try to distinguish between social laws , and social morals . Returning to our Hugo-esque scenario the bread robber is unlawful, while the rich man may be considered immoral for not helping others .
To consider your golden rule of “do unto others” is not the rich man not in breach of that rule .
Social groups , tribal or otherwise , to me , always seem to go against your golden rule and become “do unto outsiders what ever you like , do unto insiders what ever you can get away with ,while making sure you promote yourself within the group “.
Xenophobic trends and personal greed seem to be some of the most universal human behavioural traits, leading to .
Me before you
My family/houshold before your family
My neighbourhood before yours
My town , my district , my nation, my geo-political /my planet . ..
Are these “behaviours that promote the long term survival of offspring “ one could make a case that they are , I am not sure , what do you think ?
In the modern information rich social / tribal context we live in laws, and the penalties they impose when broken, seems to have become more important that morals . When one hears of a moral outcry , and I do not mean in the sense the Media tends to use the phrase , it is in the context of a religious view , or a harkening back to bygone eras ,not some current ,globally relevant ,code. Personally I believe this is , in part , due to the fact that those moral codes have been found wanting , with to many grey areas , and claims of” because” , rather that being able to hold up a absolute reason why some thing is moral or not .
Socialites need its members to conform to the agreed social format , the question seem to be , does the format need to be moral , for it to be a successful social unit .