There as many reasons to be vegan as there are vegans, but generally one chooses a vegan lifestyle for either health reasons or compassion for animals, or both. Vegans do not eat any meat, eggs, or dairy products, they do not wear leather or wool, and they have a healthy, clean conscience. There are a plethora of vegan recipes available to suit any taste. Hydrogen peroxide is used to bleach the blood and pus in the finished product, giving it the uniform whiteness.
Dairy farming is as cruel as livestock farming in many ways.
To produce milk at the pace that today's factory farms require, a female cow is kept pregnant constantly, without a break, so the milk is always flowing. These constant invasions of the bovine's systems work to send her to an early death. A dairy cow that has died or is no longer able to perform as a milk producer is slaughtered and used as cheap beef. Any offspring of a dairy cow is exploited as well, with the females continuing the cycle of dairy production and the male calves being slaughtered for veal. The decision is, of course, ultimately yours, but the more people who strive toward a vegan diet, the better it is for all of us on this spinning globe.