The universe acts just as we would expect a mechanistic, material universe to act. I have seen the argument you made in other comment threads, and I find it too weak to be worth much consideration. You suggest that God exists (along with heaven, souls, etc.). The only direct impact those entities seem to have on the universe, though, is the presence of a few vaguely-stated tidbits in a book that can be charitably interpreted to have been uncommon knowledge at the time they were written down. Notably, they were written down in connection to previous books which contain vast historical and factual inaccuracies and are better understood as mythology rather than revelation. This simply is not very convincing.
Then be unconvinced. But if you write off an argument as "fantasy", instead of going through the mandatory "theory which exhibits an order-of-epsilon chance of being true", then it speaks of a bias in your mind.
I don't mean to fall into But There's Still A Chance, Right?; I believe that the LDS faith has exhibited much more than an order-of-epsilon chance of truth. But then, we have different opinions about the weights of our priors.
In this comment thread, I gave the following idea, on the topic of a method by which one might judge the Book of Mormon from a rationalist perspective:
I would appreciate feedback on this idea, for an admittedly selfish reason: I am trying to instigate in myself a Crisis of Faith. So, here are the questions I pose to you: