I was going to be an important and well-paid writer, see. The modelling thing, that was just to tide me over till the whole writing gig took off, because I knew that you could basically walk in off the street and get work taking your clothes off for artists. But in the end, I found I liked it so much that I never gave it up. I found that there are many advantages to modelling for artists, though none of them is what you'd expect.
You can read the whole thing here.