Tim Gier writes,
How could anyone not agree with this view? Surely, other than by appeal to the worst specie of self-serving nihilism, there are no ethically valid arguments about the "good" that can be mustered that put pale to Mr. Gier's assertion.If a person knowingly and willingly participates in a system built on and only sustainable through the objectification, harm and killing of other conscious beings, then that person is contributing in a real and material way to the ongoing objectification, harm and killing of other conscious beings. When one decides to “opt out” of a such a system, one signals to oneself and one’s community that that system is not a good one and that others ought to also “opt out”. Whether, as a matter of personal practice, veganism saves a single life or not, living vegan is a social and political practice of rebellion to and revulsion at a system that must be reviled and rebelled against.