I was just thinking about something along those lines. I was speculating that possibly belief in God was so ingrained in us because it provided an evolutionary advantage. Possibly a belief in an afterlife makes a person more inclined to be optimistic and there for increases chances for survival? I have noticed that many people fear death and seem to feel that there is no point in life unless there s something better coming along after they die.
I have noticed some people are just more inclined towards religion. I have noticed these variations in my family, it seemed that of my siblings three of the six of us were more religiously inclined. In my children, neither of them, but my grandson is more like me, he goes to his other grandmothers church. I was always drawn to religion, but thirty years as a JW cured of that, lol. I sometimes wish I could believe in God, but I just don't think the evidence is there. But I still feel spiritual, I have a love of nature and and express my spirituality through the creative process.
The brain is a very interesting thing.