Probably the worst topic to blog on, here. But that said. You are soooooo wrong. First deal with taste. Things taste good to us because our bodies need the necessary combination of chemicals in the food we are tasting. And the vitamins. Secondly, we are carnivorus. The scientific and medical community will attest to this. Man is a beast of prey. Our original diet consisted almost entirely of meat from the flesh of dead animals.
You are trying to make humans into something to equal the gods. We are see more not. We have been given the desire and need for certain types of meat. Some races prefer Lamb, other races see more benefit from red meat and some races exist better on Fish. But, it is rare to find humans of any race that exist better on just greens. In fact many types of vegetables like tomatoes are really bad for some races and cause physical pain. Many nightshades are semi-poisonous to some, not all.
You are trying to group man into one simple definition, and you cannot. We are all different and most likely evolved from different combination's of creatures and therefore need certain diets.