First of all, you need to understand that while life expectancy at birth has gone up a lot, that’s not relevant to this issue; what matters is life expectancy for those at or near retirement age. When, to take one example, Alan Simpson — the co-chairman of President Obama’s deficit commission — declared that Social Security was “never intended as a retirement program” because life expectancy when it was founded was only 63, he was displaying his ignorance. Even in 1940, Americans who made it to age 65 generally had many years left.
Now, life expectancy at age 65 has risen, too. But the rise has been very uneven since the 1970s, with only the relatively affluent and well-educated seeing large gains. Bear in mind, too, that the full retirement age has already gone up to 66 and is scheduled to rise to 67 under current law.
This means that any further rise in the retirement age would be a harsh blow to Americans in the bottom half of the income distribution, who aren’t living much longer, and who, in many cases, have jobs requiring physical effort that’s difficult even for healthy seniors. And these are precisely the people who depend most on Social Security.
So any rise in the Social Security retirement age would, as I said, be cruel, hurting the most vulnerable Americans. And this cruelty would be gratuitous: While the United States does have a long-run budget problem, Social Security is not a major factor in that problem.