I've yet to find evidence for anything in my world that says that something other than a god of whatever sort we wish to come up with (for there are a great many, and who is to say which is the one, and which of the hundreds, even thousands, are not?), could not have come up with it too! Nothing that could only be by the agency of a god (and the lack of definition of god is a difficult aspect of this conversation).
I have also no reason to believe that, which some other person may experience, could not be experienced as that which they regard as god, or their god. For what really is god, in the end? That which cannot be explained? It seems the most meaningful definition I could think of, practically by definition?
After all, none of us can experience reality, so who is to say what is or isn't to be? When we get down to it, surely we can do nothing but estimate a likelihood? For those who claim to know, are surely putting themselves above all others, by dint of naught but their self-determination?