Let me start by saying that Max Brooks' World War Z is one of my favorite books I've read in the last ten years. As such, when it comes to watching a film that's very honest about making changes from its source material, I was biased from the start. Hell, I'm still biased. I admit that. All the same, I tried to go into World War Z with an open mind. After all, though it may not be good (as in accurate) as an adaptation of Brooks' book, it could still be good as a movie. And that's what important. People complaining that "Waaaah, you changed [some tiny thing]" always gets on my nerves. A movie has to work as itself, and every individual element has to be in service of that, not the book/comic book/whatever.
So attending a screening of World War Z started with me tamping down my inner hypocrite. And then, near the end, saying "screw it" and letting my inner hypocrite fly from my mouth like a shrieking (but silently, because movie theater), movie-obsessed banshee. Because World War Z? Is just bad.