Isn't there a certain arrogance with theists demanding belief in their partisan gawds while cynically rejecting belief in the other conceptions of gawds? Can we accept your acknowledgment that Zeus, Osiris, Oden, etc., etc., are just as viable and just as likely the "true gawds" as your conception of gawds?Here's an analogy which might help. It is like high school student arguing that there is no such thing as a circle because all they know is linear algebra. Yes, mathematically speaking one can not prove a circle with linear algebra, but they do exist. Understanding God actually takes a bigger brain than someone who claims they can explain why there is not one.
It ultimately comes down to humility vs arrogance. Those who insist they can prove God doesn't exist apparently believe themselves to be the ultimate intellect not only in our universe, but in everywhere and for all time. A higher being who created the universe would have no trouble at all entering and leaving it whenever and however He desired.