I loved this film. I get that most people were going in with expectations, which was the fault of the trailer, as they hinted at a explanation but then left us with unanswered question still.
I loved the main character, sammy, she had all ready kind of come to terms with death, so her going for pizza was not that crazy.
I am someone that doesn't like fast pase films and especially horrors, so thats maybe why I like they way they wrote this. Also I haven't watched that many horrors, so it a good film to start with maybe see how you like horror as a genre.