Where's my climax?

As I was reading this novel I had this feeling in the pit of my stomach of anticipation. I kept reading and waiting for some big event to take place like a big fight scene or a dramatic twist of events. I held onto this feeling right up until the last line when, with a sinking feeling, I realized there would be none. Now I'm not saying every book has to have some huge action sequence or mind blowing realization but this book didn't have anything. Honestly for me it just fizzled to a close and was vastly disappointing. There were some moments of extreme tension but nothing that kept me flipping the pages or left me with my mouth gaping open. I'll attribute this to the fact that I have been blessed with far greater literary works such as Harry Potter or The Hunger Games. Those, though, are meant to be shocking but what about To Kill a Mocking Bird or Walk Two Moons? Neither of those books are particularly exciting but both kept me intrigued throughout. Not to say that this book doesn't have good things to offer. It's thought provoking and has some excellent insights into humanity and where it's headed. I guess for me this book just wasn't my cup of tea. The books I listed above are like an awesome piece of pumpkin pie with whipped cream on top (which sounds really good right about now) but this book is like the pie crust: a good start, but not enough to fill me up.