Religious people (at least the sophisticated ones) have abandoned trying to argue as evidence that god provides explanations for how things work. They have realized that this is a losing strategy as science has made god redundant as an explanation for anything, and that signs of god’s power seem to show a notable inverse correlation to the advance of science.
As a consequence they have shifted ground to questions of meaning such as “why is there something rather than nothing?” In particular, they apply it to the existence of the universe, since the origins of the universe seem to be slipping from their grasp as an insoluble mystery to be explained by god.
This “why is there something rather than nothing?” has always struck me as a silly question and Sean Carroll gives a good answer to this question when it is put to him by William Lane Craig.
The idea is simple, if we may boil it down to the essence: some things happen for “reasons,” and some don’t, and you don’t get to demand that this or that thing must have a reason. Some things just are. Claims to the contrary are merely assertions, and we are as free to ignore them as you are to assert them.
That’s a pretty good answer.