Though I have nothing against veganism, and I was vegan for 3 years, but I can't ignore the fact that veganism is often pushed in a very ideological and agressive way. Most of the time it's about "stop killing animals for food" and "eating meat = being a murderer", neglecting the fact that from nature's POV there's no difference between a cabbage and a chicken. Both plants and animals have defense mechanisms thus both don't want to be eaten. But it's infinitely easier to project own's fear of death onto animals then onto a plant.
So counterintuitiveness is in that if we suddenly stop eating meat, we'd certainly need times more fields and terrain to grow stuff. And those fields always require destroying forests. In fact, thousands of small animals die being minced by harvesting machines, and hundreds of thousands are being wiped out along with deforestation. So here good intention could easily turn into disaster.
I personally stand for balance. Food is a fuel and source of life and shouldn't be a cult. Death is a part of life and should be embraced as it is. Avoiding unnecessary destruction is essential for balance but fear of causing death always leads to more death, counterintuitively.
For 2 years already I do carnivore diet (only meat and eggs) - helped me to get rid of skin problems, bleeding and cleared my blood vessels. Every time I eat I thank the animal for the gift of its flesh and a chance to eat food that truly nourishes my body. Also it allows me to eat way less than before in order to feel satiated, so I consider it sustainable in its own way.
I respect any other opinion about nutrition, not encouraging nor judging any particular choice.
I'd love to hear opinions and thoughts on this topic.