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See it if you love Carole King and The Drifters and the Shirelles and the Righteous Brothers and all the musicians from that time period
Don't see it if you don't like any of those musicians or any music from that time period
See it if you love puppies and love musicals. Also, if you don't mind suspending your disbelief - the puppy is mimed almost the entire time.
Don't see it if you don't like musicals and/or dogs.
See it if you enjoy a stellar performance. Glenn Close is just magnificent.
Don't see it if you don't like dark content. Also, don't see it if you prefer cheery musicals. This is anything but.