>> Only a fraction (and sometimes even tiny fraction) of the land is needed to supply the same amount of protein and calories when replacing animals sources wit

>> Only a fraction (and sometimes even tiny fraction) of the land is needed to supply the same amount of protein and calories when replacing animals sources with plant sources. That's a quick dodge, but still, a dodge of the OP's point: you can't eat all the plants that animals eat. For example, I eat primarily sheep and goat and their dairy products. The goats eat shrubs and the sheep browse inedible grasses. In fact, funny story, but I know a girl (not me) who tried to eat the grass the sheep were eating and her mouth filled with sores. I mean duh. Anyway ruminants have four stomachs just so they can digest plant matter that is impossible for omnivores to digest. Industrially farmed animals are fed soy and corn, that can be digested by humans, but those are not those animals' natural feed. Left to their own devices, outside of factory farming, browsing freely, farm animals would exclusively eat plants that are inedible to humans and so they would convert plant matter to food way, way more efficiently than any human stomach ever could. Four stomachs and rumination is the most efficient plant-to-meat production mechanism known to anyone.