Why do we take pleasure in gruesome death, neatly packaged as a puzzle to which we may find a satisfactory solution through clues - or if we are not clever enough, have it revealed by the all-powerful tale-teller at the end of the book? It is something to do with being reduced to, and comforted by, playing by the rules.
I like to write about painting because I think visually. I see my writing as blocks of color before it forms itself. I think I also care about painting because I'm not musical. Painting to me is not a metaphor for writing, but something people do that can never be reduced to words.