If man ever comes to perfect equilibrium with the environment, we'll all be redundant, perhaps because you won't need art or letters.
Anything an artist does is to show ourselves as we really are, which is a complex thing. I don't think that one work of Philosophy or Art, or Letters, or Acting, or Middle Playing, or Tightrope Walking, or Flea Circuses has made mankind better, if by better you mean kinder, wiser, more tolerant of each other. One thing self knowledge. Knoticayton: know thyself.
Writing is a kind of performing art, and I can't sit down to write unless I'm dressed. I don't mean dressed in a suit, but dressed well and comfortably and I have to be shaved and bathed.