I honestly think ending aging would be a boon for society. Because the death rate will plummet to accidental deaths, suicides, and homicides only, which are a tiny fraction of total overall deaths.

Therefore overpopulation is going to very quickly motivate world society to get its collective shit together to solve the nagging problems that have been holding us back, and encourage expansion into the rest of the solar system. Because if the issues weren't solved, even the wealthy elite would be threatened.