Fictional characters remain fictional, no matter what you or I believe.
Actually the opposite is true. Rejecting God is what brings destruction down upon you. It is not the destruction of a vengeful entity but the tragedy of foolish self destruction. Most people don’t understand the foundation their society was built upon and what is necessary to sustain it.
Your error is your focus. Your seem to think that the important question is what exists out there apart from you.
That is certainly an interesting question but ultimitally secondary.
The important question is what exists inside of you. What is there at your essence that can be built upon.
God is something transforms you a necessary foundation.
99% of the human body is composed of oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
https://en.wikipedia.org/wiki/Composition_of_the_human_body
When you die, the atoms in your body end up in something else.
BTW, it is not 'God' who is transforming you, it is you who is transforming you, but you deluded yourself to think it is 'God'.