Something pretty mysterious had to give rise to the origin of the universe.
Where did God come from? If we decide this is an unanswerable question why not save a step and conclude that the origin of the universe is an unanswerable question.
Darwinism doesn't explain where gravity comes from. It doesn't explain where thermodynamics comes from. It doesn't explain where the laws of physics come from. It doesn't explain where matter came from.
My feeling is that scientific method has the power to account for and interlink all phenomena in the universe, including its origin, using the laws of nature. But that still leaves the laws unexplained.
Even if we don't have a precise idea of exactly what took place at the beginning, we can at least see that the origin of the universe from nothing need not be unlawful or unnatural or unscientific.
It is in scientific honesty that I endorse the presentation of alternative theories for the origin of the universe, life and man in the science classroom. It would be an error to overlook the possibility that the universe was planned rather than happening by chance.
For millennia mankind has believed that nothing can come out of nothing. Today we can argue that everything has come out of nothing. Nobody has to pay for the universe. It is the ultimate free lunch.
Evolutionism as taught by Darwinism has nothing to say about how life originated. Has nothing to say about how the governing principles in the universe, gravity, thermodynamics, motion, how those originated. It's got some gigantic missing pieces.
No attempt to explain the world, either scientifically or theologically, can be considered successful until it accounts for the paradoxical conjunction of the temporal and the atemporal, of being and becoming. And no subject conforms this paradoical conjuction more starkly than the origin of the universe.
To say that the universe was here last year, or millions of years ago, does not explain its origin. This is still a mystery. As to the question of the origin of things, man can only wonder and doubt and guess.
If the universe had a beginning, its beginning, by the very condition of the cases, was supernatural; the laws of Nature cannot account for their own origin.
The usual approach of science of constructing a mathematical model cannot answer the questions of why there should be a universe for the model to describe. Why does the universe go to all the bother of existing?