We read history of human survival in this world is through their fullfillness of the need of their bodies.
In the USA, when I was a student I learn that they were called as people of plenty with big the size of burger, hotdog, and all of them have meat as highest part of calorie. In traditionally American eat meat as daily dose of foods. It make us Indonesia feel poor to compare Tempe with Beef.
While long before vegatarianism become trend, people do suggest to eat meat. In Indonesia we still have 4 health 5 perfect (4 for all food combined carbohidrat, protein, vegetable, fruit), 5 for a milk.