I cannot believe that 'when the soul enters the body' is actually part of the abortion debate

[TiberiusB]

90. That's not a correct summation of the Big Bang

Most scientists don't even use that term. Our information for what preceded the initial primordial singularity is, by its very nature, limited to theory. That does not mean that everything came from nothing. There is no theory positing that. It simply means that we don't know what proceeded those events. Also, physics is not a one size fits all field. Quantum physics is difficult to reconcile with Newtonian, hence the search for a unified theory that can bridge the gaps in our understanding. That means constantly testing and retesting ideas until the pieces start to fit, or at least fit better.
The fine tuning problem doesn't establish anything other than there is always work to be done to advance our understanding of the cosmos. It doesn't open the door to metaphysical explanations at all. Souls or gods would require a massive leap in complexity that simply does not spontaneously occur. The formation of the universe, the evolution of life on Earth, every iteration of any D & D rule book I've ever tried to read, they all show a movement from simple to complex.
It's like Intelligent Design Theory. The idea that the complexity of life and the universe suggests an intelligent hand guiding the process conveniently ignores not only billions of years of history, but utterly sidesteps the obvious question, "wouldn't a creator of such complexity also be too complex to be a random occurrence, and therefore suggest a creator for the creator?"
More succinctly, if God created everything, what created God?
Also, how can souls be a factor in any debate about abortion? Isn't bringing souls into the discussion suggesting a type of immortality? Won't they just take up residence in another zygote somewhere?