This is a very imperfect novel. The characters are unbelievable, not that well-developed (especially in the first half of the book), and don't seem to react like real human beings when things happen. Despite all that, by the time I reached the halfway point I was completely taken in by this story, very invested in these ridiculous people, and will be moving onto the second book immediately. Sometimes life just doesn't make sense I guess. 

(I listened to the audiobook version of this, produced by Neil Gaiman and would recommend it!)