I liked this book a surprising amount. I am a fan of dystopian lit but in my experience the recent rush of dystopian ya lit isn't such a good thing. 
 More often than not you get a book with a vaguely dystopian theme, controlling government, no freedom, some kind of scientific/environmental crisis. Then the main character meets a boy and who cares about the world falling apart...? Clearly not her because she's in love, what a shocker. 
 I'm pleased to say Divergent wasn't like this. Yes, there is a love interest, but does it consume every aspect of the MC's life? No it doesn't. Tris is her own person, she doesn't base every single decision she makes around the boy she likes, in fact there's a brilliant scene when she actually hits him in the face. And Four is the ideal love interest in my opinion. He's very strong, intellegent and not always very kind, which is exactly why I like him. He feels very real, because he isn't perfect. 
 I didn't mind the lack of world building, especially as I've already read book 2 where much more is revealed. There was enough in Divergent that the plot felt fleshed out and made sense. I would definitely recommend this book.