Ok, what is the mystery in the origin of life? As I understand, it is how all the required molecules came together in the right configuration spontaneously? Is that the question that we are trying to answer?

If this is the question, I think the Multi Worlds Interpretation provides the answer. Because it says that there is some worlds where any given random event will manifest.

So it follows that there is some worlds, where this random event that we call the "origin of life" manifested. And it is just that we are part of one such world.

>multiworld interpretation is one of several interpretations of quantum mechanics of the exact same evidence

I think we might think the other way around. That the origin of life, as well as the fact that we seem to be alone in the universe, as a proof of the MWI..

About the latter, I think we have an overwhelming chance to be alone, because while it is true that there can be universes where random events have lead to origin of life in multiple places, the universes where there is only a single "origin of life" event will vastly outnumber such universes that the chances of us finding oursleves in one such universe (where life has originated independently more than once) is vanishingly small.