Right, but that's the other extreme. Then there's everything in the middle, and most of that, unfortunately, do not form a kind of "healthy lifestyle" that has a chance to confer longevity benefits. So when people say, "just have a good diet and exercise regularly and sleep long enough and such" - it's a bit of a lie, because to do enough of these things to matter, you might be required to sacrifice the very things you value in life the most.

And I mean here both sacrifice the things you hold dear directly, or indirectly - which for us here is predominantly our careers and places of living.

Exaggerating a little bit to underscore the point: I could likely add years to my QALY lifespan if I moved to countryside, picked up more manual labor that required me to move my whole body, and went hiking in between going to the gym -- but, the things I value are found in cities, the work I like is white-collar, I hate hiking, and I also have people I love to support and lifespan-friendly labor generally doesn't pay enough.