Being religious is being irrational by definition. All leaps of faith are irrational because they are not built on rational analysis. Not believing in God and not believing in religion are different things. Denying existence of God/gods is as irrational as believing in It/them because you cant prove either way (The most logical proofs of Gods existence, Ontological of St.Anselm and Geometrical of Spinoza, are still extremely problematic).
But we digress
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