My "belief" is that the idea of a god (or God, if you prefer) is man-made to try to explain our existence and also to create groupings on that basis of; setting out rules on how to live together (a moral code) and the promise of living forever, but not in the physical sense that we understand life (Heaven, Nirvana, reincarnation).
Evidence? None, but the notion of a g/God is in Man's mind. We have existed for maybe 50,000 years and the idea of gods for 5,000. Prior to that (as far as we know), the idea of a god did not exist in any other beings' mind. Our planet is one of billions. It is not at the centre of the universe. What makes us, Man, so special that all of this was created for us?