In a way song writing can almost be detrimental because suddenly you find an outlet that is a kind of cheating. You don't need to have direct communication. You can say 'I can't describe it to you but I will record it and send it to you.'
I turned down 'Some Like It Hot.' See how smart I am? I felt I couldn't bring anything funny to it. The outfit was funny. I don't need to compete with the wardrobe.