Horror Movie Scaredy Cat Sees World War Z

The new Brad Pitt zombie movie, World War Z, is out on the prowl.  I can't stand being scared.  I hate losing sleep.  I am SUCH A wuss when it comes to horror movies.  ZOMBIE MOVIES?  Perhaps the WORST.  I saw it on Sunday with some girlfriends, thinking it would be a PG-13 walk in the park.  Far from it. OY.  I was on edge for hours after seeing it.  After chatting with some friends, it sounds as if the book is better than the film.  There is NO CHANCE I am reading that book!  SHEESH.  Thanks for losing hours of precious sleep, Brad!  Love, Missy