Maybe to a separate question, biology has nothing to do with why some have personal feelings, tastes or opinions in regards to subjective morality.
Let us return to the original question and I will try to be more accurate and specific.
Maybe to a separate question
Firstly congratulations to me for knowing you so well inso little time. Amazing that you ticked off every box on the list btw.
, biology has nothing to do with why some have personal feelings, tastes or opinions in regards to subjective morality.
Biology is the primary reason any organism does anything. People have evolved morality because it gives us an evolutionary advantage.
It is the mechanism of morality. Without living organisms there is no reason to believe there is any morality. In fact how can there be with no mind and if a mind is required then morality is an abstraction not an existent "thing" in and of itself.
Morality is contingent upon moral actors. Humans are the only moral actors we agree exists therefore morality is contingent upon humans.