The study of aging hints at the prospect of eternal life through science, and while it is quite fanciful, the notion of it opens up some interesting moral and ethical possibilities, not of an ordinary sort.
Now some may consider this another simple matter of progress, and on the surface it may seem like any other ethical issue opened up by science and technology. So that they analyze it with the same means, thinking it another matter of value and utility, of technological trade offs and old problems for new. That some simply think of it as another scenario where the rich might prosper at the expense of the rest.
And while these issues may or may not exist, they are relatively trivial compared to the door opened.
Such a step, opens a doorway to the divine.
For example, if eternal life exists, then a prisoner might never die, such that a life sentence would not only mean life but eternity. The circumstances of such a judgment might very well mean the sentence is not just life, but actually hell, for they would be suffering forever, and not at the hands of god, or a devil, but from those of another human being.
Moreover, mankind, now dwelling eternity, might not find the day to day full of splendor, but rather quite mundane, such that we would have to call it limbo.
Such that, the notion of eternal life through science, necessarily opens up the consideration of the divine, relating to Heaven and Hell, not of any ordinary ethical matter related to scientific progress or the normal development of technology.
Such that one has to wonder what other such doorways exist to the divine.
Now, it’s no such question that if science can open such doors it will.