Eating animals is not necessary. There are millions of vegans across the globe and from all paths of life that lead perfectly healthy lives. In fact, the Academy of Nutrition and Dietetics, the United States’ largest organisation of food and nutrition professionals, states the following:
“It is the position of the Academy of Nutrition and Dietetics that appropriately planned vegetarian, including vegan, diets are healthful, nutritionally adequate and may provide health benefits for the prevention and treatment of certain diseases. These diets are appropriate for all stages of the life cycle, including pregnancy, lactation, infancy, childhood, adolescence, older adulthood and for athletes. Plant-based diets are more environmentally sustainable than diets rich in animal products because they use fewer natural resources and are associated with much less environmental damage. Vegetarians and vegans are at reduced risk of certain health conditions, including ischemic heart disease, type 2 diabetes, hypertension, certain types of cancer, and obesity.”
“In strict vegetarians, low dietary intakes of vitamin B12 and D, calcium, and omega-3 fatty acids, in addition to iron and zinc, have often been of concern 25. In the present study, mean intakes of these nutrients were above minimum requirements 26 in strict vegetarians.”
In a modern environment where one is not living in a state of survival there is quite simply no need to exploit and slaughter billions of sentient beings. All necessary nutrients can be found in a healthy vegan diet.