Should it? The testable implications of quantum theory readily challenge very obvious beliefs on a daily basis.
It is not obvious at all that the universe needs a source. It is asserted without evidence that this is the case and even worse it is asserted by theists that this source, very conveniently, does not itself need a source.
Complete speculation of course, assuming a creator from which it can all start. The need for a “creator creator” is hand-waved away by simply defining it that way. That’s what we call “marking your own homework” Aquinas had a crack at this but his thoughts were as inadequate and circular as anything before or since.
If everything needs a source, then your creator needs a source and you are in infinite regress. Turtles all the way down.
If you declare, by fiat, that you can stop that regress at a certain point and call it “god” then on what basis and what evidence do you do that?
Even then, how can you say it is a single entity? If you have the ability for one eternal entity why not two, three or a billion?
And why even claim an eternal entity anyway. This must necessarily be a complicated thing who then goes on to create a universe from simple beginnings. How much less complicated is it to allow the same properties of eternal existence to those simple, unconscious elemental particles or energies. It requires far less explanation, provides exactly the same starting conditions and is even more in accordance with the world as we see it because it does away with the need to invent an omnipotent, omnipresent, eternal, conscious, complicated, capricious and ineffable entity who provides no evidence for their existence and is superfluous to the working of the universe. As Laplace said, it just works without that assumption.
To me, this all feels like special pleading and the god of the gaps. The theists place their god where science cannot go because then they simply cannot lose.
You’ll note that as the explanatory power of science increases god becomes less and less involved in the actual, physical world. He never used to move in mysterious ways, he brought forth floods, plagues, talking shrubbery, pillars of salt, aquatic pedestrians, resurrections, food tampering etc. but has been curiously silent in a period where analytical techniques might actually be able to give weight to these “miracles”.