Because...Beacause it's so good, and there's only one chance to read a book for the first time, and I want it to last. That experience. I'd finish it in a day otherwise, and that'd be like...like eating a carton of ice cream in one sitting. Too much richness over too quickly. This way, I can draw it out. Make the book last longer. Savor it. I have to since they don't come out that often.