Ummmmm....because they are tasty. Meat was essential for the development of the humanoid brain. Do humans require meat today? No not really, but if it wasn't for your meat eating ancestors you wouldn't be capable of making that choice. I choose to not eat veal, but just about every other meat is fair game. I eat venison and rabbit, as well as beef, chicken, pork, lamb and fish. I do prefer to eat free range animals and it's even better when I harvest it myself. I have no problem with someone being a vegan or sticking with any restrictive diet. If it puts a smile on your face, rock on.