A planet that desperately needs all of us to go vegan, the torture and suffering of animals who want their lives as much as we want ours, and contests with prizes such as your weight in chocolate: The reasons to try a vegan diet during November, World Vegan Month, range from the ethically compelling to the downright silly.
Zombies are, insofar as I understand their biological classification, undead. They aren't entirely dead, but they certainly aren't fully alive either. That sounds a lot like life with a serious chronic disease. When one's life no longer involves pleasure or the pursuit of interests, it is something of a half-life.