I've never been a fan of contemporary art with "a message", e.g. some kind of commentary on the world the art belongs to. I've always thought that it was a thinly veiled attempt at disguising vacuous artists' lack of talent by commenting on the culture of their time with poorly-formulated and often shallow ideas. Call me old fashion, but to me, art is the culmination of an artist's skills, which often take a lifetime to master. Michelangelo's sculptures or Poussin's landscapes deserve to be called art, while Duchamp's re-purposed pisser doesn't.
While Warhol would belong to the latter, I truly enjoyed his current retrospective at the AGO, not so much for the art itself, but for the story behind the character, a complex one to be sure, that can't be captured in just a few words. I can appreciate that he had to overcome many barriers to his success, not the least of which were his humble beginnings (he came from a family of dirt-poor immigrants), his commercial art career (something fine artists sneered at) and his homosexuality at a time where being gay was, sadly, a crime.
Whether you like his art or not, I highly recommend you check out the exhibit, it's worth it. My favourite piece was the portrait of Mao turned into a piece of purely capitalistic art, turning the whole idea of communism on its head, in a cynically commercial move.