You say...
"It is scientifically, philosophically and psychologically impossible to prove or disprove the existence of God, as many posts have said. Why not move on and eliminate the possibility of going to hell?"
This is a very bold statement and not correct. Some proofs of the non-existence of God are famous and effective. Examples would be Nagarjuna's 'Fundamental Verses on the Middle Way' and (less-formally) Bradley's 'Appearance and Reality'. The whole of existence is reduced by their arguments, including that of God. This is not quite atheism, or this interpretation is not forced on us, but it is a denial of any God we might imagine.
In his comment above Conifold notes crucially that by some definitions of existence God does not exist but is believed to be real even so. This would be the God endorsed by Keith Ward in his 'God: A Guide for the Perplexed' and is the 'classical' Christian view of God. To exist is to 'stand-out' but what would God stand-out from?
In metaphysics it is possible to prove the non-fundamental nature of existence and thus of everything that exists. I think maybe you underestimate the power of logic and analysis.
You may also need to decouple Hell and God. Many atheists believe in Hell (or hell-realms) and many theists do not.
In the end your view is guesswork. You may find it comforting or useful but your reasoning does not get as far as settling the question of God's existence but rather just gives up on it. If you have in mind the most common forms of folk-theism then your argument may have some value but as soon as we move on to a sophisticated concept of God it misses the mark.
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