All the great philosophers knew that a vegan or vegetarian diet is better for our health, emotional wellbeing, mind and spirit. Why don't we all follow the greatest thinkers of history and stop killing and eating living creatures? There is more than enough plant food for all the people on earth.
Most of the suffering on earth will disappear immediately if everybody starts to eat plant food. Everybody will have enough food and animals are no longer badly treated. A person who can kill an animal, can kill another human being. A vegetarian or vegan person simply can't. All war would be over!