Cats! That show had really no purpose, it's amazing that people packed the Winter every night to see a whole bunch of people dressed up as cats singing pointless songs.
I think Phantom's story is romantic, whatever, but it's a pointless show! Same with Mamma Mia, entertaining? yes, pointless? ohh yeah!
To someone who said "Avenue Q" was pointless I disagree, this show actually touches on many issues and satirizes society.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"