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"I think nearly everyone is an unbeliever."
Then you'd be wrong.
I suggest you read a good book on cosmology, such as "The Road to Reality" by Roger Penrose, or "Godel Meets Einstien" by Yourgrau.
Having a better understanding of the foundations of science and it's place within our rationality might make you realise the limiting and fundamentally false nature of scientism/positivism/materialism that seems so pervasive amongst new atheists.