Vegetarians are not only evil, but they are delusional.
Most land where cattle and livestock are raised are totally unsuitable for raising vegetable crops. One need only drive across Wyoming or Texas to see that. To raise enough vegetables to feed humans a modern farm needs much more energy than a cattle ranch. Cattle do not need chemical fertilizers, nor do they need much irrigation. They do not cause chemical runoff into streams and rivers.
Besides, Vegetarians Are Evil!