I always begin a book knowing how it starts and how it ends. It's the middles that I strugle with. Unfortunately, the middle is the majority of the book!!
I'm not a fan of hugely happy endings. The kind where everyone ends up happy and then they walk into the sunset. Because, well, that's just not real life. Even when one of my stories has a "satisfying" ending, I know there's still trouble down the road. That's just the way it is.
I tried to think of books with endings that disappointed me, but I couldn't think of any off hand. What about you? Any endings that left you wanting more? Do you like your stories wrapped up in a bow?