I think one of the reasons musicians keep doing what they do and writers keep doing what they do, is that we're totally unsuited for anything else. And I for one am much too lazy.
I always knew I wanted to be a character in the movies. When I was growing up, I had to have a lot of surgery, and I spent a lot of time recovering at home and in the hospital. Watching movies took me away from my own problems and gave me a total escape.