The fact is that older people incur much larger healthcare costs over their lifetimes [1]. In fact, "[those 85+] consume three times as much health care per person as those 65–74, and twice as much as those 75–84." If we keep inventing new treatments to keep you going until the next crisis, or another drug to take to prevent yet another fatal condition, then we're going to have to realize that health care costs per life-time are going to increase, and that is going to be spread through the population through insurance.
Unless our lifetime earnings increase as fast as the cost of medical technology, we will reach a point where we cannot afford to live longer even though the treatments exist. We may get to a point where we have to make the hard decision of how long we want to wait until we retire and how long we really want to live after we retire.
I don't know what the solution is, but I can't help but notice that we are not in a sustainable situation.