A deep question pervades the debates surrounding religion—whether God exists, sure, but that one is mighty difficult to answer. Instead we can ask a related, more approachable query: Why does God exist for some of us but not for others?
Saroglou, V. (2012). Are we born to be religious? Genes and personality influence our attitudes toward religion. Scientific American MIND, 23(2), 52-57 (2012. https://doi.org/10.1038/scientificamericanmind0512-52 (Original work published 2012)