I think people just think they are high brow if they see Cats and the tickets sell due to that alone. I've seen it twice - once when I was 12 and once when I was 35. Sucked so so bad both times. But when I bought the tickets the most recent time I saw it I remember thinking, "it's been running forever, everyone must like it so I guess I'm the freak. I'll give it another chance." Self-fulfilling prophecy.
Seriously, it's SO bad. People applaud because Mr. Mistopheles spins around a few times. I mean COME ON a first year dance student learns controlled spins.
Very few plays turn into good movies.
I mean just look at cats