I'm not sure what point you're making.
I was trying to make the point that if the Life expectancy in 1950 was 65, then if most people who were born around 1950 are dying at around 50-80 years of age that everything makes sense.
I fully understand that an
individual's LE changes as they age both from getting past certain age-related illnesses, and advancements in science.
The current system in place is designed where you pay into social security and taxes all your working life, and die before you can collect retirement.
This is pretty much how things are designed I think. I don't think many(if any) countries have a SS program that is so well funded that it could handle everyone living long enough to collect for a couple decades. Again, I'm not sure about the USA, but here if you make too much in retirement from other revenue streams, our gov pension plan pays you nothing.
EDIT: OAS, Not CPP, so half of the money is guaranteed, the rest is clawed back based on income So if you are a good little saver, you still pay into the program throughout your career, but you get nothing out of it even if you live forever.