Are there any rationally compelling reasons to believe in a god or gods, which created the cosmos and the things in it?

Nope. But what of it?

"Rationally compelling" is too high bar. If a position really were rationally compelling, a rational person who understood it would have to be convinced. But there's very little in philosophy that meets this standard. There are rationally acceptable ways to believe in God, rationally acceptable ways to believe that there's no God, and rationally acceptable ways to be agnostic.

As for what the reasons are, that's a long story, though I'd caution against thinking they can be reduced to slogans. Of course, the same point goes for more or less all claims that philosophers debate. But somehow, some people seem to think the case of religion is different.

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