HT2326 - The Problem with Liking Artwork

What does it mean when we say we like someone's artwork? Its content agrees with our view of the world? That gets complicated because, for example, I like Picasso's Guernica, but I don't like war. Does it mean we admire their technique and craftsmanship? I have no doubt that Bartok was a talented composer, but I don't like listening to anything he wrote. Does it mean they've shown me a world I've never seen? Then why do I enjoy listening to the same music over and over again? Does liking artwork mean that it meets our expectations?