There is absolutely no nutrient, no protein, no vitamin, no mineral that can't be obtained from plant-based foods.
The human body has no more need for cows' milk than it does for dogs' milk, horses' milk, or giraffes' milk.
People are the only animals that drink the milk of the mother of another species. All other animals stop drinking milk altogether after weaning. It is unnatural for a dog to nurse from a mother giraffe; it is just as unnatural for a human being to drink the milk of a cow.
Consider the biggest animals on the planet: elephants, and buffaloes, and giraffes. These are vegetarian animals. They grow to thousands of pounds of muscle and bone without ever eating cheeseburgers and pepperoni pizzas.
My single greatest challenge is to remain centered and loving in an overwhelmingly nonvegan world. In today's world, cruelty and exploitation of other beings - human and non-human alike - are accepted, practiced, and profited from by most every institution of society - from commerce and science to education and entertainment. Unfortunately, the vast majority of Homo sapiens are either unaware of the cruelty or accept it as unavoidable and even normal.
The human body has absolutely no requirement for animal flesh. Nobody has ever been found face-down 20 yards from Burger King because they couldn't get their Whopper in time.
All red meat contains saturated fat. There is no such thing as truly lean meat. Trimming away the edge ring of fat around a steak really does not lower the fat content significantly. People who have red meat (trimmed or untrimmed) as a regular feature of their diets suffer in far greater numbers from heart attacks and strokes.
