I think that Hollywood and other media have already indirectly addressed this. It's simply a matter of how far you are willing to go to achieve effective immort

I think that Hollywood and other media have already indirectly addressed this. It's simply a matter of how far you are willing to go to achieve effective immortality. Vampire stories essentially gloss over this - you live forever at the cost of coming out into the sun, garlic, crosses, etc. That is to say, the way to become immortal is simply by becoming a vampire. There are exceptions of course, but these transformations are generally regarded as unfavorable, because you cease being human in lieu of becoming a monster. For me, once humanity achieves immortality, that is the inflection point. You are no longer human. You could argue whether one is human may come before or after that point. But for me, this is where I personally draw the line. Life saving implants, artificial limbs, illness curing/muscle enhancing/brain stimulating steroids, cybernetic/internet connected brain implants, AI merging singularity brain upload, you name it. It's not necessarily bad or good either way. But at some point, you cease to be human (by my definition anyway). And it just so happens that if you're effectively immortal, I consider that obviously inhuman.