Where do I even begin with this book? I guess I have a love-hate relationship with it. Veronica's writing is phenomenal but this book literally made me cry for days when I first read it - it still makes me cry - and I really wasn't sure how long it was appropriate to mourn a fictional character.
Life outside of the city is definitely different in the Bureau but I always imagined it how America is now - with a lot more ruins, of course - and I absolutely loved how detailed everything was. You could tell that Veronica had thought out the side characters meticulously, giving each their own personality that you don't normally find when a character is only mentioned on one page.
The ending was something that I'm not sure I agree with. I understand why she ended it the way that she did - it just seemed like the right thing to do with how said character was in the previous books - but it still made me feel like a part of myself died with the story. I know that it'll continue to live on as long as I cherish the story though, I just wish things had turned out differently.
Summation: Tris and Four didn't have distinguished enough voices for the alternating POV thing to work. Half the time I would forget who was the "I," if I left the book to go do something for five minutes or more in the middle of a chapter.
Also, all I thought the whole time was "THIS IS NOT HOW GENES WORK!" And it's not: http://reflectionofreality.com/post/98102281799/why-the-premise-in-allegiant-doesnt-make-sense
When you write something, particularly a thing with religious-y undertones, getting basic facts about science correct would be great.
Overall I liked this book :D It's not better than Divergent, but in my opinnion, it's better than Insurgent. :D I like the dual point of view, but sometimes t felt like it's the same person... But, I read the book while listening to an audiobook, so I didn't have a big problem with the dual point of view. :D