Can you imagine being a part of the younger generation when immortality is discovered or extended longevity? Would jobs ever open up, or promotions be available? Nobody will retire at the top, so there will be extremely little turnover. How can the young hope to surpass the old if the old hold all the keys and never let go?
Sure, aging is scary, but have you really thought through all the implications of curing it? Heck, have you even thought about why it exists in the first place? There are many cancer lines that never age, so why haven't organisms evolved that never get old? If you have an answer, I'd love to hear it.