Largely this is a class thing - writers tend to be cosseted little middle-class kiddies who think that the world owes them a royalty cheque. But just doing it - being in your room for years on end locked in your head alone with invented ghosts - it weakens and softens the body. And I know I can't just live in my head.
I have a hotline to the tabloids. When I get up in the morning I call the Star and the last thing at night I call them. I want them to have the inside track.