reading the book I just thought the movie was disappointing.
I really enjoyed the book because of the detail of the world truly at war with something which can never be duplicated in a 2+ hour movie but you would think that they could have found a way to broaden the story. Instead what you have is something as sad as a Stephen King novel translated poorly for the big screen.
Maybe someone can come along and make a series or mini-series out of it like the Walking Dead and give the other stories in the book the chance to develop like they should.
I definitely can't recommend it and found this video on Youtube that wraps it up pretty nice.