Veganism is a lifestyle where people choose not to eat animal products and also not to use any other form of animal products.
That would be too extreme for me, but I do not eat meat.
There are many different types of veganism. 
Yeah I guess it just depends on a person's individual beliefs and perferences.
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
it the largest animal rights group in the world. Its slogan is "animals are not ours to eat, wear, experiment on, use for entertainment, or abuse in any other way."
Alternatives and reactions Veganism and vegetarianism.
Veganism is the practice of abstaining from the use of all animal products, particularly in diet. Vegetarianism is the practice of abstaining from the consumption of meat (red meat, poultry, seafood, insects and the flesh of any other animal and may also include abstention from by-products