This is an amazing movie. Everyone should watch it. Why? Because it tells us we're so damn wrong.
Animal based diets will eventually disappear as people will realise they're not sustainable anymore.
It is extremely important the scientific material in the footage as it was made in a science-only point of view. There's no random guy telling you to go vegan because of the animals (which as a vegan myself, I find it enough argument though) they're giving you proofs of every single word they say.
If you're vegan (or in process) you should watch this movie, it will give even more reasons to go vegan and feel great about it.
But, if you're not a vegan, you should definitely watch this documentary as it will show you lots of things you don't know which may change your live.
I understand changing something as basic as what you eat is very difficult, and acknowledging our mistakes is even harder but you should try to be open-minded when your about to watch this documentary because, if you're not, it will be useless.
I really hope you enajoy this documentary as it should be, as a piece of valuable information for every single human out there.