I always ask people...How do you think YOU began? No one knows at what point consciousness develops, because it's literally a cell by cell process in an embryo too. Now, it's true that no one can pinpoint the exact moment inanimate process becomes animate, but if someone thinks that because it's not pinpointed that God comes in and animates every collection of blastocysts in every female reproductive system, well, that's just...silly and a little weird. What happened to all the blastocysts and embryos that don't make it to the next stage, was there not enough holy spirit or something?
The process that makes life has to be inherent in the process itself, or you have a pretty ridiculous supernatural scenario going on. It doesn't matter to me if someone thinks supernatural power has something to do with it at some point, originally, but the process itself is self-sustaining to some degree or it just isn't very feasible. Needing supernatural intervention for every animation in every organism on earth is a very inefficient process when all that's required is for the process to be self sustaining.
If you believe God would make something so clumsy, he's not that great a Creator, and believe me, the biological and reproductive processes, as amazing as they are, are anything but perfect in ALL organisms, not just supposedly "iimperfect" humans. Nature makes lots of mistakes every day, and not just in humans, obviously. But, the process of cellular death, if you're a biologist isn't a mistake, in fact, it's one of the best indications of cellular health. Cells that lose their ability to die and be replaced are called cancer, for that's what it is. You don't want a cell that doesn't die, believe me.
The ability to regenerate indefinitely or quite a bit longer than human cells do is found in nature, but nothing has been found that lives "forever" whatever that means. That would require a total reworking of everything in our bodies on a genetic level. I don't know what we'd be after that, but not human anymore.
We'd be a new species of human, and without death in the life cycle, we'd lose the need for reproduction too, which would pretty much point to what the good old WTS hints at a human paradise would be...sexless androgynous humans just existing to putter around a garden for eternity, feeding Val...I mean offering praise to Jehovah. (sorry, little Star Trek moment there, episode "The Apple"..look it up if you're not into Trek...interesting scifi take on the Garden of Eden story)
Sounds fun, NOT! and again, we wouldn't be human as we know humanity now, because the reproductive process involves every other system of the body, not just the reproductive organs. You can't just shut it off or get rid of it without changing the organism fundamentally on every level, even the brain.
But, it also doesn't explain how Adam and Eve could be deathless and still be able to reproduce. Deathless creatures wouldn't have the need, so there'd have to be some serious breaking of the laws of biological processes we know now for that to happen. IN other words, Adam and Eve, if they existed literally, would not have been humans as we know them, nothing like us physically.
That's one big reason that as someone whose studied biology and medicine, the so called perfection equalling deathlessness of Adam and Eve makes absolutely no sense at all. To be human, biologically speaking, means to die, so you're not human if you can't die. So what the hell where they, if they existed, aliens?
Death is part of the life cycle for every living creature on earth, and we share all of our DNA with everything on earth, but I'm supposed to believe that humans were created as the exception to that basic biological rule? Nah, uh uh, that dog just won't hunt.