Vegans and the Quest for Purity

Our survival came about through evolution, a process of drastic environmental changes in which periods of vast destruction eradicated most complex life forms. When life started again from the survivors in the new ecosystem, those most attuned ("adapted" is the word) to the new environment produced offspring that could survive. Those survivors could themselves be victimized by other predatory survivors in the struggle for resources in changing ecosystems. Refined as some of our moral sensibilities may now be, there's nothing we can do to outwit this fact: To be alive is to be a murderer. Or to be murdered.