I have been vegetarian for 50 years, and vegan for five. I grew up on a beef farm, and what I saw there made me very willing to try giving it up, and all the effects have been good. Now, I have seen the world population triple, and the terrifying news that only 10% of the animals on earth are wild. That's ALL the other species we don't plow to raise. The world is now in the anthropocene, and if we don't change our ways within a generation, it will start with a horrific extinction event, written in the rocks as our epitaph.