Todd, you say that asking what the odds are that the universe and we are here by chance is a “strenuously abstract question.” The physicist/mathematician Roger Penrose apparently didn’t think so, and backs it up with science and math.

Regarding the three implications that you suggest:

1. Regarding the “lot of universes” idea, there’s not much evidence, string theory notwithstanding, and it lacks elegance; I doubt Occam would approve.
2. Regarding “more things out there,” again, we have to work with the available evidence & science, and pay Occam his due.
3. Which leaves us with your “intention or plan.” I think Occam would concur.

And there’s really no need to “decide whether spirit exists”—as Penrose, who I think has indicated in times past that he’s a materialist, notes, we still don’t even know what matter (waves and/or particles?) is.