When SS started the average life span was 63, it's beyond 80 now. You can't maintain the same structure when the life span has increased so much
Literally not one person on the planet disagrees. Do you think cutting benefits is the answer? Or do you think it would it be better to maintain the (promised) benefits, and increase the revenue into an historically important and successful program?
Why do we even have this program? To provide social security, in the literal sense. Security in retirement and disability for all Americans. "Don't worry about buying that car, because we won't let you crash and burn because you retire or get injured or are disabled". We don't even have to broach such "taboo" subjects as compassion and empathy to appreciate it (to the benefit of the aspiring Randians, knowingly so or otherwise). We can just focus on mathematics and economics. Do we still value this goal, or do we not?