Peaceful, idyllic societies have a tendency to be vegetarian (if not vegan) in fiction. As often as not, these societies are portrayed as being morally, perhaps even spiritually/magically superior to our own, implying that humanity's meat-eating habit is somehow holding us back from living in a world of Crystal Spires and Togas. Sometimes it can be downright Anvilicious. Some cases aren't so focused on the evils of eating animals so much as how circumstances might force people to adopt a vegetarian diet. See Future Food Is Artificial for examples of this. Examples of Veganopia include: