Only because you seem to insist on making belief something that happens to you rather than an attitude/decision made in the face of the unknowable. It would be dishonest to do or think something you know to be untrue. I'm not advocating that. I'm advocating the better and more reasonable choice given the objective vacuum.
As for the benefits, they're established. Google away. People of faith, not only Christian, are happier and (unsurprisingly) healthier. Happier, healthier people live longer, more productive lives. Equally established is the correspondence between the believer and charitable works, both in terms of financial donations an personal time attending. That's a better model for the social compact.
Atheists are, to my mind, mistaken romantics.
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