The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.
The problem of modern society is it turns the whole world into a school. Everybody's wearing jeans, everybody's the same. And yet, they're not. So there's a spirit of equality combined with deep inequality, which can make for a very stressful situation.