Presumably if we could extend life, we could also extend the period of life in which you can produce and create useful things. There would be little point extending lives if it meant you spent an extra 30 years confined to a bed with no memory of your identity.
Upper middle class and above have little to no qualms about throwing scads of money at a little bit of extra time here, even if the quality of that time is approaching 0. And in the baby boomers case, they expect the government to send in their due. When that comes, though, we will not be able to afford it.
It's kind of what we talk a lot about in the entrepreneurial sense: We try to convert time to money in a reproducible sense. However, the older you get, money depreciates to 0 (dead people have no use for money), so you run that equation backwards, with large inefficiencies.
But this kind of talk seems to piss off the bulk of downvoters. So be it.
