Here’s an interesting survey by the Pew Foundation.
Asked whether they, personally, would choose to undergo medical treatments to slow the aging process and live to be 120 or more, a majority of U.S. adults (56%) say “no.” But roughly two-thirds (68%) think that most other people would. And by similarly large margins, they expect that radically longer life spans would strain the country’s natural resources and be available only to the wealthy.
Of course, most people are probably not considering that technologies that can increase healthspan (rather than longevity per se) will also help us better manage our resources and create wealth.
Pew Foundation survey on longevity