Within the different art mediums there are many typical categories that are routinely shunned:
Within music people are often heard to say they will listen to anything besides rap and country. A variety of styles of music throughout history are often labelled 'classical' and seen in a narrow light - usually viewed categorically as light music - and are never experienced by the unfortunate ignoramus.
In literature there are many who would never dream of reading anything found in the science fiction section of a book store. Some people will only read non-fiction, believing that all fiction is a waste of time. Even within genres there may be subgenres that are ignored, such as beat poetry within poetry.
Some film fanatics wouldn't be caught dead watc...