The author of 'Diet for a Small Planet' answers this question by saying that “Americans often eat 50 to 100 percent more protein than their bodies can use. Thus most Americans could completely eliminate meat, fish, and poultry from their diets and still get the recommended daily allowance of protein from all the other protein-rich foods in the typical American diet."
In the 20th anniversary edition of 'Diet for a Small Planet', the author corrects information included in the 1971 edition. “In combating the myth that meat is the only way to get high quality protein, I reinforced another myth. I gave the impression that in order to get enough protein without meat, considerable care was needed in choosing foods. Actually, it is much easier than I thought.”
The strongest animals are the gorilla, the elephant, the horse and the ox. All of them eat a vegetarian diet.
It is always possible to choose expensive convenience foods, but overall, a vegetarian diet is the choice of most of the world's population due to the high cost of meat. If the North American meat industry were not heavily supported with tax dollars, the real costs of meat production, would force most of us to make less wasteful and healthier dietary choices.
For many years the medical establishment discouraged their patients from adopting a vegetarian diet, as it would compromise their health. Now, it is acknowleded that just the opposite is true. Vegetarians live longer, healthier lives than meat-eaters, and are thinner on average.
Most of us tend to repeat the same small number of recipes, yet we know that there are cookbooks full of recipes that we have not experienced. Eliminating meat merely exposes us to new food choices, often encouraging us to try international and ethnic cuisines.