I picked The Last Girl as my choice for the free book of the month from Amazon, at least that is how I think I got this for free. It was an okay book, the story was interesting, somewhat reminded me of Children of Men just based on the premise of the world breaking down if there was a problem with birthrates. This book centers around the concept of the birthrate of girls dropping to zero rather than all births, but that would be a byproduct eventually.
The character development of this book is what really turned me off. I had trouble at times remembering who certain characters were or why I should even care about them. There were groups of people introduced at the same time with a few sentences of explanation that made them seem like superfluous additions.
Apparently this is the first book in a series, but I do not plan on reading any of the others. If you are really bored and like young, female protagonists then maybe you should pick this up, otherwise move along.