I am a firm believer that we are nothing more than "emergent properties" that arise in a complex mix of chemistry and physics of our brains.
If there is a "soul" or an "essence" it is nothing more than the summation of our memories and our normal neural network functioning.
If there is something BEYOND this, something that borders on the supernatural there is really no way to confirm that. If you look at the animal kingdom completely you see a distribution of "self-awareness" and "personality" in animals. Do they all have "souls"? Most religions deny that animals have a "soul" so for me that is an indicator that "soul" is just humans' hope that there is something ineffable about themselves that survives death or destruction.
Only problem with that is: there is no evidence of any soul or essence existing without a physical functioning brain. But we have a HUGE amount of evidence of a physical brain being damaged and the resulting "essence" of the person changing dramatically. Like the story of Phineas Gage.
I don't necessarily subscribe to the philosophy of a Platonic soul or a Christian afterlife. In the Socratic tradition, I think it's important to ask questions and test the limits of our knowledge.
I can appreciate your post, but here is my two cents.
'Emergent properties' is just a polite way for saying we don't have a bloody clue. We don't understand how conciousness emerges from cells, we don't know where the laws of physics and the universal constants come from, and we don't know what caused the origin of reality and the cosmos.
When you really think about it, advancements in scientific knowledge has really only been at the margins of human experience. And I say that as a scientist myself. Our aquisition of scientific knowledge has benefited us technologically and filled in the blanks about the natural world.
But on a day to day basis, it is an insignificant part of the human phenomenological experience. General relativity, quantum mechanics, and particle physics have very little to do with our phenomenological experience. A genuine human life generally revolves around metaphysical issues of truth, beauty, fairness, justice, freedom, equality, aka things that are beyond the reach of the laws of physics and chemistry.