Every one makes their own choices. I have been vegan in the past, not using any animal products at all, including leather and only buying products that I knew we're not animal tested. Now I eat some dairy and eggs, but I always try to buy organic.
People have different reasons for choosing a vegan or vegetarian lifestyle, and certainly to eat healthy is a common one. But some people choose this lifestyle to limit the amount of cruelty in the world. Modern American factory-style animal farms are notorious for bad treatment of the animals.
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