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See it if You enjoy listening to classically trained performers and don't mind there not being a lot of movement/flashy staging.
Don't see it if You don't like true musicals (no spoken lines).
See it if You want a play that will evoke thoughts and emotions and make you really think twice about jokes you make and so on.
Don't see it if You're easily offended.
See it if You want to see something about a blossoming friendship. Or you like spin-offs.
Don't see it if You don't like belty-songs and you prefer to believe the Wicked Witch is really wicked.
See it if You're interested in seeing something that takes place during the Civil Rights Movement.
Don't see it if You don't like men dressed as women. Or rock and roll.
See it if You like things with the 20s feel. And/or if you're a feminist.
Don't see it if You're not into 20s things and can't stand an ending where the "bad guy" wins.