I don't see the scientists coming up with anything better...

"Before the big bang, there was nothing. And then that nothingness exploded."

I don't think either side has a lock on the award for "Least Believeable Explanation".

And there's the root difference between science trying to explain creation and the Bible trying to explain creation: As soon as the scientists do come up with something better, and have empirical tests to try to prove or disprove it, then the explanation will be modified to fit the new facts. Can't do that with the Bible.

Temporarily putting aside your oversimplified explanation of the Big Bang theory which misstates the current scientific view, I don't buy the Big Bang either. But it's no worse of an explanation than "Before creation, there was God. And then that God made stuff." Both state a point of origin but don't offer any concrete details about what came before that.