Veganism
Veganism is the following of a diet in which refrains from consuming any animal products, including meat, seafood, poultry, eggs, milk, or honey. It is often thought of as a stricter form of vegetarianism. Vegans also try to avoid use of wool, leather, fur, and other animal-derived products. The basis of veganism is the idea that killing animals for food is only one part of a wider problem of unfair exploitation, and that keeping animals for eggs, wool etc is another form of the same exploitation.
Most vegans do it because they do not want to cause harm to animals, many even because they believe they are god's loving creatures. Many vegans are not christian, possibly because becoming vegan and losing a faith both require strong critical thinking and a strong will.