Proximate, and God is the more distant cause.
Evolutionary morality must as a rule promote that which promotes life. If we are axiocentric (revolve around value) and our sense of value is evolved and naturally selected we ought to be valuing things which promote life. Eg the sex drive the value of an [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse]. Or eg empathy as a means of reading situations and causing cooperative responses. In a broad sense this is responding to evolved axiology of pleasure and pain, and secondly in a cultural sense reactions to our capacity for culture which promote life (e.g. early Christianity promoting welfare and family) ought to be culturally selected via feedback with the more basic systems mentioned above. So there are basic biological and cultural adaptations selected by natural forces. Could you believe an evolved axiological landscape that promoted outright genetic suicide would last long?
If things were different, that may work; however, that is not at all what I am left to believe is what's going on around me. You describe what you see from that point of view well, in my opinion; however, that is not the only way to look at it..
Although truth exists, there's always more than one way to look at anything, and we're all left to believe something.
How well can you describe what Christians see?
(You are on a Christian web site. So, in need of an example-perspective, I think it a fair example.)
Can you represent another's ideas to the degree that the other agrees with your characterization? Or, are you, as the bible put's it "stiff necked"?
Denise and I can call for a "reality check" at any time during any disagreement. Then each must give account for the other's "side of it" to the other's satisfaction.
Although truth exists, there is always more than one way to look at anything, and everyone's left to believe something.
On one hand, in my opinion, if I could not represent you, I cannot legitimately disagree with you.
On the other hand, there is a world of difference between disagreeing with people and disagreeing with ideas. Nothing good comes from disagreeing with people instead of ideas. The very worst things come from agreeing with people instead of ideas.
I make no attempt to represent any other human being but Denise, my wife.
Here, we represent ideas.