Well, I'll defend the "because God" crowd a little because of my fascination with medieval philosophy. Even if you've stuck "because God" as the end of the infinite series, that doesn't preclude some
really interesting thinking about the earlier steps. Also, we tend to associate "because God" with stupid people because since the bifurcation of science and philosophy, well, it kind of deserves it. But prior to that division, EVERY* really smart person was also sticking "because God" on the end of all his thinking. So in and of itself it doesn't render interesting thinking impossible. It's just that, since the division, choosing "because God" as an overriding claim means actively discarding conflicting knowledge.
It's a selection bias problem -- you couldn't tell anything about people from NYC in the 19th century because that's where immigrants came in. Now you can tell they're jerks because they have other choices and yet persist in being there.
(* well, not every. There have always been materialists, and the Greeks weren't having any of this purpose nonsense til Plato showed up. But you get my statistical drift.)