Are they living in a 1,500sf house (median size in 1960)? Without AC, no cable TV, no computers, 1 car, no exotic / organic foods except from the garden, few toys, 60’s era medicine. Do they actually repair or even make clothes? How about home repairs?
My mother was a teen in the 60’s and while objectively they were well above the median income for the time period in many ways they lived like extremely poor people do in 2024. Some of that was actually saving money for retirement, but mostly it was just far lower expectations.
Backwards movement in QoL metrics is mostly on the left tail: impoverished Americans have access to AC and refrigerators, but often live in food deserts or are subjected to perverse policies in our social safety net (e.g. welfare cliffs that punish people for working by taking away benefits that enable them to work).
I am definitely not trying to paint a rose-glass view of the past. I am saying that we do have more prosperity today than we had 60 years ago.
I am also saying that we pay of a lot of time to have things that provide diminishing returns. (Ie. would you rather have flush toilets or access to facebook - style of reasoning). Maybe the famous 80% value for 20% cost is also inflating?
I agree with the larger point about prosperity, and I think there are ways in which the US (and other developed countries) have gone backwards in QoL metrics. But a serious conversation about that needs to start with numbers rooted in reality, not a rose-glass view of the past.