Luckily social Security is there and spouses that don't work receive 50% of the benifits so there's a big chunk of the 1 in 3. Add up all your yearly earnings capped at $110k today's dollars, convert to today's dollars, divide by 420. Take 90% of first 850, 33% of 850-5200, and 16% of the rest. If you've worked minimum wage for your entire life and your spouse stays at home, that's still 95% of your yearly income. If you have home equity that means no mortgage payments or even a potential reverse mortgage.

If you are Middle class, can move to lower CoL too. It's really not that big of a problem if we increase age/decrease benifits for extremely high earners