For prolonging life 'indefinitely', I'd say it's anything but a foregone conclusion. Possible issues: The world population is getting bigger and bigger. AFAIK,

For prolonging life 'indefinitely', I'd say it's anything but a foregone conclusion. Possible issues: The world population is getting bigger and bigger. AFAIK, we don't have a real solid idea how many people the Earth can really support. Growth seems to be tapering off a bit now, which is probably a good thing. If we keep the same birth rate and massively decrease the death rate, the population will boom fast. I have to doubt that our society is equipped to deal with these issues well right now. A great deal of social advancement seems to come from older generations dying off, and taking their prejudices, grudges, and viewpoints with them. What will our society look like if large numbers of people stop dying off eventually? I have nothing solid here, but it's something we ought to look at real hard before we go around extending lifespans indefinitely.