Heres something I thought of. - Would the Idea of God still exist, if humans didn't know they were going die and didn't get the idea from their parents, grandparents, family. Imagine this, a very unethical program and unlikely program which raises several children in a "laboratory" in a very censored type of enivorment. Which censors the idea of death and god. Do the kids question why they are here? Something like that would def, be able to solve if the idea of God/s is just because of fear of the unknown I.E death. Now I'm not saying we should do that, would def be unfair to the kids, but would the program pave the way for God to be "proven" or "unproven". Because if the kids do come to the conclusion of a higher being, or don't ever think of it, wouldn't that become proof we need to answer the question "Does God/s exist?"