Prayer is blasphemous

[The Valkyrie]

Until you have evidence that it is something else, you're making baseless assertions.

You can't have that kind evidence for God if God is beyond the physical natural and detectable universe. At most you can detect and observe the interaction between God and the physical universe. You will have to rely on other kinds of evidence and rational reasons to believe in God over the alternative which you can't prove either. God isn't "something extra" but the necessary eternal aspect of existence you will necessarily need for anything to exist in the first place. You have the Creator and you have the creation, the two go together.

Convenience: How claims of deities are always outside the need to provide evidence for their existence.