I am vegan, so I don't eat or consume anything that comes from an animal
Why do you become a vegan
well one term is ethical vegan, that means I follow the philosophy of it, so I try to consume the least waste as possible because animals should not be used for any purpose
Does that mean you still consume animal at the barest minimum 
Well its my diet but sometimes it is hard to avoid it, products sneak dairy into a lot of food like one example I bout a plain tomato sauce that had it
How do you feel when they sell such to you. DO you get mad at it
not only follow a vegan diet but extend the philosophy into other areas of their lives, and oppose the use of animals for any purpose. Another term is "environmental veganism", which refers to the avoidance of animal products on the premise that the industrial farming of animals is environmentally damaging and unsustainable.
Well-planned vegan diets are regarded as appropriate for all stages of life, including during infancy and pregnancy, by the American Academy of Nutrition and Dietetics, Dietitians of Canada, Australian National Health and Medical Research Council
China study, that appears to link the consumption of animal protein with the development of cancer and heart disease. He argues that casein, a protein found in milk from mammals, is "the most significant carcinogen we consume". 
Campbell has followed a "99% vegan" diet since around 1990. He does not identify himself as a vegetarian or vegan because, he said, "they often infer something other than what I espouse". He told the "New York Times": "The idea is that