** spoiler alert ** 
 I only read this last novel in Veronica Roth's trilogy because I had already committed time to the other two books. While the cliffhanger of "Insurgent" promised that a "real" world existed outside of the established "Factions" world, the punchline (this entire book) was not worth it. 
 At times it felt that Veronica didn't know what she was going to do with her characters. Told from the point of view of Tobias (Four) and Tris, this book slowly gets to the point, which is that Factions are no longer going to be an accepted form of categorization, while maintaining that if you want to remain in a faction you can choose to do that too. 
 So the objective is true democracy and while it is a noble attempt at writing a story about revolution, making it so that the outside world inside the book thinks that everything going on in the "Faction World" is a joke, makes the whole book feel like Tris's world is just some kind of fair where everyone is playing dress up and taking themselves too seriously. If the video at the end of the second book was telling the truth and there was a substantive reason for the Factions, then this story might have been worth reading. 
 And while a reason was sort of given, it just didn't make all of Tris and Tobias's efforts seem worth the hassle. In the end Tris is martyred as she stops the people in charge of the Faction world from resetting everyone's mind. I felt bad for not being sad about her death, even as Tobias mourned. Sure Veronica told me they were in love and they were the real deal, but to me it just seemed like death was the only way Tris would ever be happy and her death was the only way that Tobias could ever be free of Tris. I felt that in the end he would move on and finally be happy. I hope the movies are better.