Whenever you read an insanely popular book, there are some traps and snares along the way. The first of which is the insane popularity of the book. That can create enormous expectations of the book. As a result, your expectations are unrealistic. The other side of that coin is really annoying those who love the book. It could be as simple as not buying into the hype, or as serious as recognizing huge theological problems (like in Velvet Elvis or The Shack). Either way, those who have been (rightly or wrongly) impacted by the book will be mad at you.
Crazy Love: Overwhelmed by a Relentless God is one of those insanely popular books. Francis Chan became a well-known pastor as a result of this book. As a result, I had very high expectations for this book. It didn’t meet those expectations (that does not mean it is a bad book). On the positive side, it was not dripping with heresy like either Velvet Elvis or The Shack.
Books of this sort are to be both practical and theological. John Frame rightly, I think, notes that you haven’t really understood a doctrine until you apply it (or at least begin to). Each book has its own blend of them. Some are heavy on the practical, and some are heavy on the theological. Sadly, some are so far skewed as to be no good to the soul.
Chan’s book, which I suspect is adapted from a sermon series, is skewed toward the practical. There is theology in the book, but it leans toward the practical. This is part of its appeal to many. But I prefer to have my heart warmed and stirred by theological truth so I am pursuing a sound lifestyle (see 1 Timothy 1). I felt more manipulated than instructed. I don’t mean it to sound that terrible, really. Francis is very passionate about his topic, and says many things we American Christians need to hear. My issue was more with the presentation, if that makes sense.