There are many arguments for longevity, even if it were temporarily for the rich, or those in advanced economies. For example, people who live much longer woul

There are many arguments for longevity, even if it were temporarily for the rich, or those in advanced economies. For example, people who live much longer would probably think about the environment on longer time scales. That includes climate change, pollution, resource exhaustion, and so on. They might consider helping to improve their society, because even if it took several generations they might live to see the benefits. People who live longer can afford to make better long term investments, instead of trying to cash in on short get rich quick schemes. They might take better care of their health, knowing that they're not just risking the usually healthy 20s-60s range, but a 20s-200s range, when doing risky activities. Those risky activities sometimes affect others. People may care to invest in research to cure other diseases because more people will live long enough to suffer from them. And so on...