I love ballet, the opera, orchestra concerts, would rather see a play than a movie, Shakespeare In The Park...but I hate musicals.
Put it this way: I'm a Monty Python fanatic in general and Holy Grail specifically, and I was ready to stab my ears bloody and scrape my eyes out with my fingernails during Spamalot.
I've been to several (Billy Elliot may have been the worst), and they're just torture to me. I feel like I'm either watching a play that keeps getting interrupted by a concert, or a concert that keeps getting interrupted by a play, and I want one or the other, to not a mix of both.
I don't even like Rocky Horror Picture Show. What does that tell you?