What the averages conceal on retirement age
A Social Security Administration study several years ago found that the life expectancy of male workers retiring at 65 had risen six years in the top half of the income distribution but only 1.3 years in the bottom half over the previous three decades.
“People who are shorter-lived tend to make less, which means that if you raise the retirement age, low-income populations would be subsidizing the lives of higher-income people,” said Maya Rockeymoore, president and chief executive of Global Policy Solutions, a public policy consultancy. “Whenever I hear a policymaker say people are living longer as a justification for raising the retirement age, I immediately think they don’t understand the research or, worse, they are willfully ignoring what the data say.”
I'd say "willfully ignoring," myself.