Thanks, it wasn’t clear, I thought it was more meta than that.

I think it matters because God can mean a lot of different things to a lot of different people. Are we talking about Plotinus’ “το Ἕν” or are we talking about Allah? This is the problem with these kinds of questions. It’s difficult to discuss the nature of what God even could be, before we get on to whether or not you “believe” in it. As other posters have pointed out, even the language of “belief” is generally inadequate as a starting place.

Why do you think truth matters so much? Don’t disagree, but why is it humans will forego a more beneficial situation if it’s proven to be “untrue” or “not real” etc?

How is it possible to answer the question until you define what “God” you’re referring to? Christian God?