There are many arguments made for and against God. All are academic but one. First causes, intelligent designs, physical laws or their breach (miracle), etc. The cosmos is immeasurably hostile toward we humans, even in our little garden we call earth. One asks and argues that if existence begs a god then why one so hostile in creation? Why not a perfect world?
“Perfect” is the portal here for morality. Men judge the desirability of things and call their desires moral. The moral argument is alive and well in favor and in opposition to God. Both sides use the moral language of good, pleasurable, safe etc., and their scalar opposites (evil, painful, danger, etc.). The cosmos is academic but morality is not. Its personal. And whether one believes in God or not, one must deal with the problems of evil and frame the rules for goodness.
For man to say that God had His chance and screwed it up necessitates that man step in to fix it up. But the one thing for sure about mankind is that he screws everything up. What kind of an argument is it that removes the only hope of “perfection” only to empower those whose only moral credential is the inevitable corruption of power? The entire record of human history as we know it is the only proof we need that immoral mankind cannot long govern himself and he who will not rule himself “rightly” will surely be ruled by another, probably one less worthy than himself.
The Bible answers all challenges: God’s moral perfection, man’s potential for God-like righteousness, man’s inevitable failure to govern himself, his need for rescue, God’s provision of that rescue, and a clear transcendent expression of that righteousness from the Decalogue to Jesus’ sermon on the mount.
The vociferous rejection of God is ALWAYS a moral action. The part about God’s existence that is troublesome is that it defines righteousness in ways contrary to the denier. “It would be OK for God to exist so long as He did not mess with my choices. I want to live my own way. Life is difficult and cruel and if God wants my support he will have to do a better job of making my life easier.” To argue God away with such passion begins with blaming God for “moral” wrong-doing. Any dispassionate argument against God is merely academic.