If you like this person's taste, follow him or her!
See it if You'll see anything or are a friend of the cast or creators.
Don't see it if You like good writing, with a remotely interesting story that make bit of sense.
See it if You love modern operetta (like Phantom or Les Miz), where everyone sings a lot, but not about much.
Don't see it if You demand interesting thought and ideas from a show. Miss Saigon is rather empty headed, and often morally repellent.