Belief in God is rational.
Everything has a cause. So unless there is a first cause, then you would have an infinite regress. And then nothing could exist. Therefore there must be a first cause. Therefore God, the first cause, exists. QED.
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12.1.18
Liftoff of the Apollo 17 Saturn V Moon Rocket from Pad A, Launch Complex 39, Kennedy Space Center, Florida, at 12:33 a.m., December 7, 1972. Apollo 17, the final lunar landing mission, was the first night launch of a Saturn V rocket." height="480"