The simple answer is you can't write something that will please everybody. Here you have people who insist they will read every part of the book front to back, and you also have people who choose what they wish to read.
I personally find it really odd that some people skip to the end to find out what happens, instead of reading through to it, but I don't consider them lesser readers.
I quoted this from the "to prologue or not to prologue" thread....and it made me think...
Some people do this, I knew someone who would do it because she couldn't stand the suspense of not knowing...so she spoiled it for herself but still read the entire book.
Have you done it? Which book? How did you feel throughout the book, having already read those last few words, sentences, pages? Were you glad you did it? Were you disappointed?