Art's value comes mostly from the expression rather than the execution. What value does painting a historical figure have? There is no creativity or expression there. An angry, rambling man slapping his sweaty forehead against his yellowing bed sheets is more valuable to the art world than the 500th artistic rendering of Venus or whatever. Post-modernism is possibly the greatest thing to happen to art. Now people can truly experience self-expression. Art no longer requires the artist to have any talent, so there is no barrier to entry. Now more art can be produced and great works of expression the likes of have never before been seen thrust out into the public. With no boundaries (e.g., tastefulness, integrity, etc) to contain the vision of the artist, art can become the best in the west.