What makes a keeper?

Ah, the immortal question. What is it about a book that earn it a slot on your keeper shelf? I was thinking about this topic because two new books have recently earned their happy way onto my keeper shelf. :-) So, I thought I might list a quick 5 reasons for why a book is a keeper:

1. I can't put the book down. I will skip food and sleep to get reading because the story is that good.

2. I consider swapping my husband for the hero. You know...cause the hero is so awesome.

3. The pacing awes me. There is never a moment of down time--go, go, go!

4. I cry, in the good way. :-)

5. I don't want the book to end--ever.

Those are my keeper reasons...wanna share yours?