I'm glad you posted this because I am so frustrated by the issues it raises, and it's impossible to talk to anyone about them.
I've watched it twice now, and I've been almost completely vegan (I eat cheese maybe once a month, and I eat honey maybe once a week, but no other animal products) for a couple of years, so I realize that it's sort of preaching to the choir in my case. However, I realize that I can certainly do better... but at the same time, this film (and "Mad Cowboy," by Howard Lyman, who was in the movie -- just read that yesterday) just makes me angry. I'm so tired of people hiding the truth and/or hiding FROM the truth. They just want to eat their burger, keep their head in the sand, and ignore the consequences. This should be THE NUMBER ONE ISSUE that everyone's talking about. Racism, abortion, cancer, etc... all of those things are important, but they won't matter at all when we have no food or water. Yet if you try to bring up any of this stuff, people simply don't want to hear it. They don't even want to hear about it on a personal level. People with obesity, diabetes, high blood pressure, high cholesterol, etc. just want a pill to fix it all. Most of them aren't even willing to try changing their diet and refuse to believe that it has anything to do with their health. And they certainly aren't willing to believe that it has anything to do with the planet's health.
For the first time in my life, I'm glad that human life is finite because I do not want to be around in 100 years or 200 years or 2000 years or whenever the shit hits the fan regarding all of this. Meanwhile, I feel like I have zero power to do anything about it, other than control my own habits, which really makes no difference in the long run if no one else changes anything.