Olber's Paradox,
redshift, discovery of cosmic background radiation, and more observational evidence point to a finite universe that is currently expanding and at one time was in a dense, isothermal state.
Emperical, observational, repeatable evidence that points to the Big Bang model of cosmology. This makes it infinitely more plausible than an invisible, unobservable, diety that plays an active role in the universe.
You'll note that I've never contended that there isn't ANY possibility that some extra-universal agent exists, merely that there isn't a shred of hard evidence for it.