Hi everyone,
Belief in a God is not entirely because of religions. Religions only create images, legends and stories of God and gods. They cannot instill real faith. In fact, real faith leads to religious beliefs and ideas.....which help in forming anthropomorphic deities and images.
Faith is something that arises due to ones direct experience and insight. One feels and realizes the hidden hand of a superior intelligence in ones life.
Most humans seem to have a natural inclination towards faith and a subtle understanding of hidden patterns and influences in our life. I for example, have had it from childhood. But for this natural inclination, we would stop believing in a God regardless of religious teachings.
Just some thoughts.
Cheers.
Sriram
While not entirely disagreeing with you Sriram, I think it is much more fundamental than 'religion', 'faith' or 'god'.
I think fundamentally the evolutionary advantage for humans is intelligence and inquisitiveness. Humans don't have strong claws, can't fly, can't run fast etc etc. We have survived because our intelligence and inquisitiveness allows us to work stuff out, to solve problems and to derive solutions that help us survive, breed and pass on that knowledge to the next generation.
And that passage of knowledge requires protection and careful nurturing of offspring - humans are born with the survival ability as some other species have. It takes years for a baby human to attain the knowledge to survive in the world and over those years the young human needs protection as well as learning. Hence the best approach to raising humans is a society - humans are social animals for evolutionary benefit. So complex societal behaviours arise that both protect the tribe and its young but also establish a sense of 'belonging' to that tribe rather than the tribe down the road so to speak.
So where does this lead us in terms of the OP. Well unlike other species if there is something that is apparent through experience, but where the reason why it happens is unknown, the human response will be to try to explain it. Now sometimes that explanation will be correct, but in plenty of other cases it will be a best-case guess in the absence of actual knowledge - hence the sun 'chased through the sky in a golden chariot', hence the thunder being 'the wrath of the gods' etc. Now from an early human perspective it is likely that many explanations for natural phenomena will be anthropomorphised, as the 'human' experience is what they know. So what is created are what might be described as 'explanation myths' - a way to explain things through the prism of the human experience and inadequate actual knowledge.
So where might these 'explanation myths' lead in a tribe or societal group. Well they need to be promulgated, but also can be gently expanded to support the social cohesion of the group and to set one group apart from the other. So the 'explanation myth' that explains thunder as some unseen super-human fighting morphs into those super-humans being powerful, to being 'gods'. And the culture morphs into adopting those 'gods' as their own through promulgating the myth through ritual. So we end up with a society who god will protect as long as they worship the god, and in this way individuals are incentivised to remain part of that tribe, rather than another for fear that the other tribe has no similar protection from the gods.
So I can easily see why the development of myths, leading to religions, faith and belief in self-created gods can arise through evolutionary advantage. But that doesn't mean those myths, religion and faith are true. Further this seems to be a stepping stone to real knowledge, which likely confers still more evolutionary advantage. So understanding that lightning is electricity and being able to use it to heat, light, hunt etc etc is more evolutionarily advantageous than explaining it to be god.
I can see howe the preservation of a societal norm (e.g., but not necessarily a religion) can help with social cohesion in smaller tribe-type situations, but things get much, much more complex when those tribes combine into larger societies that need to determine how to run themselves for a much broader good. And that's where the problems start.