Taste is a mark of ethical appeal in my book. If you don't know what art is, let alone good art, then you have not read or listened to any form of language (visual, verbal, or written) whatsoever. To know art is to engage in it in the form of criticism, at the very least.
Remember the line from High Fidelity?
"Awhile back, Dick and Barry and I agreed that what really matters is what you like, not what you are like..."
If you don't like The Beatles or Shakespeare or Picasso or Kubrick or Seinfeld (at least one?), then where have you been?