Because comedy is cheap to put on: if you've got a play or an opera, there's a whole load of people and a set, but comedy is just one man or woman. And because TV has learned to love comics - there's so many more around now than when I started out.
Occasionally I find a travel book that is both illuminating and entertaining, where vivid writing and research replace self-indulgence and sloppy prose.
I myself am pathetically impressed when I meet writers of very long novels. How can they spend so many hundreds of hours at the miserable, lonely pastime of creating fiction?
I have a suspicion that a lot of artists are trying to get a laugh but, unlike stand-ups, they don't get an immediate response from their audience; a laugh is a rare thing in a gallery.
When I was eight or nine, I wrote a new version of 'Peter Pan' for the school play. They didn't use it - I imagine it was unperformable - but as recompense for not doing my script, I was offered any role, and instinctively went for Captain Hook. I came on trying to be terrifying, but everyone laughed at me.
It is London fashion week, and once again I haven't been invited to any shows. This is upsetting given my well-known love of fashion, or, as I think of it, playing with the dressing-up box.