You hit on what has always been my complaint about the Do You Believe In God question. It’s really saying, God Exists, and do you believe in him. Bad question. And of course what the really real meaning behind the question is, in the US at least, are you a christian. Maybe a better way to talk is to ask Do you believe in Nature? Or does nature exist? Or maybe Do you believe there’s something outside of Nature that exists? And some who believes is called a Naturalist, and someone who believes otherwise is called an Unnaturalist.