By the time we have "immortality", we'll probably be able to have space elevators, and a fleet of space stations orbiting the sun where people can live. Just ma

By the time we have "immortality", we'll probably be able to have space elevators, and a fleet of space stations orbiting the sun where people can live. Just make a rule that once you are 120 years old, you have to leave Earth and live in space. Such a rule would allow for the continued progress of Earth culture, and instead of dying, people can go off and live in space. Each group of like-minded people could go a live in their own space station, so there would likely be very little conflict based on differing ideas. (And maybe immortals would be better than we think at changing their minds and adopting new ideas.)