So you believe there is no transitional taxa between bats & non-flying mammals based on the fact that there is no evidence of one?
I don't think the two cases are the same. In the case of transitionals above, we have the bats, we have other mammels, we have many examples of similar transitions, we have genetic evidence. There are good reasons to believe the transitionals existed even without finding one yet if only by comparing the end points with other transitions.
In the case of the existance or non-existance of god(s) we have nothing that suggests there needs to be a god or that there is on. There is no connection between this god and anything else.
In fact, if we try to connect the idea to anything else (as in the bat transitions) to make a reasoned judgement about the existance of a god we find that many other cases of the god-idea also have no hint of their existance. Additionally, a number of these gods are described in contradictory ways suggesting that many (most, all?) are wrong just through logic without evidence.
With a track record like that the god-concept isn't something that you would bet on while you might place a big bet that the bat transitionals existed and maybe a small one that they will be found sometime.
™ Version 4.2