There is no sincerer love than the love of food
George Bernard Shaw
Eating is a simple act. Yet the question of what humans should eat is a complex one. But why?
Those humans who are reasonably well-off have a lot of choice when it comes to food. The availability of choice spawns the necessity for discrimination. This is a far cry from the hunter-gatherer Early Man who ate what he/she got. No ethical dilemma. No fear of judgement. No restrictions due to religion. More importantly, no real danger of ruining the environment.