From what I gathered from your OP, unbiased adjustment is a kind of fatalistic steady-state. No? Everyone would be axically fatalistic, yet still managing to keep existing.

My claim, that your objective purpose is to be God's punching bag, contradicts your theory. My theory predicts we'll see not just the survival of nihilism, but its thriving. Nihilists will become single-minded in their pursuit to question God. They will birth a new more-verbose version of the archangel Lucifer. Such a project will take trillions to the trillions in capital investment, the natural resources from several galaxies, and multiple generations. All for the single purpose of even listening to God without just instantly becoming fully converted to His cause like mindless sheep.

Btw, I don't necessarily view the exile from Eden as a "fall". After Adam ate the fruit Eve gave him, humanity stepped foot on the path to Godhood. As in, God Himself comes from such a lineage. This is a high-risk high-reward scenario. If we fail to handle God's next test, we'll be utterly annihilated. God hates pretenders.