Even if it is possible, it would be like Necromancy except without the magic, utterly fucked up medical science piecing peoples' body parts together onto one person for the sake of lengthening their lifespan and you also have the issue of the black market and what criminals would do with that kind of technology.
I don't think that kind of technology in particular should exist in the first place.
What about transplantation of hearts, kidneys, livers, etc? Do we not have the black market for organ transplantation right now?
Besides that, the real necromancy is bringing dead people back to life. Should we ban resuscitators?
I knew people would bring that up yeah but they aren't from living unwilling victims are they? Which is where my worry comes from, besides, we have embryo's etc. for growing that shit now without killing off a healthy human being that's already fully grown.