Is it going against nature to be vegan?

Perhaps a bit: A good question without an easy answer. Carnivorous & vegetarian animals have differing anatomy & physiology & it can be argued that humans have more in common with vegetarians, but actually our features are most consistent with omnivores. See http://rense.Com/general20/meant.Htm. But being peaceful may also be against our nature, but that doesn't mean it's a bad idea. Vegan diets can be healthy.