while a rude response, guy above does raise the point of well, yes I'd like to not die at 40. Medicine is good. But the talk of imortality is hubris. Is is to judge oneself the best or most worthy thing, and to deny our children and the nature of progess itself. As medicine has brought us extra life, death and re-generation have brought us us. And as us which have been given, we give to others through our death.

So whats the limit? Its a big question that dosen't need to be answered now, because immortality is not on the table. Another 20 or so years maybe. So maybe lets take care of the world we got before we fall into some delusional sense of godhood. (Just upload yourfselfs bros)