Many herbivores don't have multiple stomachs (ruminants do, monogastrists do not). Given that, and the fact that billions of people in the world live entire li

Many herbivores don't have multiple stomachs (ruminants do, monogastrists do not). Given that, and the fact that billions of people in the world live entire lifetimes without eating meat or taking meatpills, your argument is basically completely wrong, on a factual basis.