Theism&atheists people tell me its reasonable or fair to ask proof for god existence.?

powerful people say erroneous or treacherous promises to poor people to cheat them . same way we can deception the god and make him visible to earth people. we all thing god can easily give a concrete or scientific or specific evidence to sinful/good people for proof of his existence or visible look.and god cant read our mind and real feelings.its fair to ask proof for god existence