Because there is that sort of feeling that people don't know what to do with gaps in their lives. It's a scary notion, but actually, if you can stand in space just for a little while, a new door will open, or you'll be able to see in the dark after a while. You'll adjust.
Literature is without proofs. By which it must be understood that it cannot prove, not only what it says, but even that it is worth the trouble of saying it.