"But I’ve also observed a tendency, over my years as an SF reader, for SF writers of a certain age to give the After Us The Deluge speech, so I promised myself I’d try to be watchful of the onset of that, try to fend it off as best I could. I suspect that when people notice how much of the world they grew up has already ended, it’s quite natural to feel that the world is ending. Because the world one knew quite demonstrably is. But it always has been ending, that way. You can read the ancient Greeks, say, doing it at great length. When younger, though, this sounds like something one can simply choose to avoid, just as old people, to the young, appear to have made some sort of inexplicably terrible decision to become old."