What a waste of time that was! I felt greatly cheated by the ending. It was exactly as if I had met a friendly, neatly dressed, smiling person on the street who, after 5 minutes, turned out to be peddling his religion after all. Honestly, I have thought of much better stories myself. I remember GREATLY enjoying Asimov as a teenager, and I am pretty sure this is not his best story.
It doesn't necessarily need to be a religion. It's clear that something like what we call The Big Bang happened. But we can only trace back time and space to the origin. What happened "before" the origin is probably unknowable to us on this side of the origin. The best we can do is speculate, in scientific or literary terms. So think of this as speculative fiction, expressed in terms of the author's time. Personally…
That was true for me, too.