I used to like read the first sentences of the last chapter, or at times the last few sentences in a book back when I was a teen. Spoiled a bit of Harry Potter for myself that way.
These days, never. Why? I'll let this quote from the opening post help me demonstrate it:
The unknown is the whole fucking POOOOIIIIIINNNNNTTTTT!!!!!!
Annie also notes that perhaps one reason she always reads the end first is because “my life is so full of unknowns that to truly escape I have to know exactly where I’m headed.”
Yes, it's about the end, but more often it's about the journey! I love not knowing what will happen. Why read the book if I know how it ends? And yes, I know I just said the journey is more often the point, but if I know the end of the journey the first time around, I rarely seem to enjoy the journey as much.
I have reread books, yes, and enjoyed them more the second time around. Just like I've seen my favorite movie about 40 times. And I keep finding more stuff to enjoy in that movie.
Bottom line: I love storytelling. In any form. A well told story is an awe inspiring thing. I don't care if it's simple, if it's told well I love it. Probably a reason why I'm so fond of mythology.