that for an atheist (or evolutionary absolutist) there simply CAN logically be no God. There is NO human law or any kind of morality that is not based squarely on the existence of God.
You may consider yourself to be an atheist, but if you claim that there are any moral “rules” at all, you are speaking with a forked tongue.
At most you can say it is better for living with others not to lie and kill. But is it always? Says who? And by what authority? Lying and cheating can lead to some pretty good personal outcomes!
And pure empiricism certainly doesn’t show that some actions are “good” and some actions are “bad!” And if YOU choose to not act in a certain way, what then?
I guess we will leave aside the question of whether you can choose at all for now. But it really does not mesh with the human concept of right and wrong if ALL behavior is merely necessary.
At best this line of reasoning leads to a stultifying nihilism. It leaves one literally adrift on a Godless sea, with no rudder or sail with which to steer.
If there is no God, there simply IS no right and no wrong. There is only power and the willingness to seek and use it. There is no meaning to our lives at all–Nietzsche was entirely correct. The psychopath has the only true perception of the world. The rest is just boob-bait for Bubba.