danjograss3’s suggestion is the standard line taken by humanists in their criticism of  belief in God. I don’t want to dispute the argument as such, but just to make an observation based on Romans 1:18-32 which has been echoed by anthropologists. It’s not that mankind has furnished an invention about God as an explanation for things that would otherwise be too painful to comprehend, but that mankind has, in its various cultural histories, an awareness of God from which it has turned. Anthropology shows a declension, rather than an evolution in religious belief, accompanying a moral debasement. This phenomenon seems to me to be more strikingly interesting than the view that man simply invented God. With the latter, one would have expected, as history of religions thinking has mistakenly tried to suggest, that lower forms of religious belief would evolve into higher, more complex forms. The opposite seems to have been the case.