Humans are omnivores. Period. While it is possible for humans to be healthy on a purely vegetarian diet, it takes a lot of effort. You have to consciously consume such awful products as tofu or boca burgers just to get enough protein. Meat has been a valuable source of protein in the human diet for thousands of years. Furthermore, killing a human being is murder. Killing an animal is not. If you don't believe me, here is the definition of murder from Dictionary.com: "The unlawful killing of one human by another, especially with premeditated malice." Sorry killing a deer isn't murder. I myself disagree with trophy hunters who don't eat what they kill, because it's wasteful. There are many positive aspects to hunting. First of all, it's fun. Second, if you're good you're putting food on the table, and if you butcher it yourself, you know the conditions it was processed under, something you don't know when you buy food from the grocery store. In addition, it's great exercise, as you mentioned yourself when you said "process of hunting burned many valuable calories". But you shouldn't get too angry at me, because you probably don't get enough protein in your diet and too much stress might make you faint.