"Our dying flesh becomes their nutrients. They can do just fine without humans surviving on the naturally occurring soil and carbon dioxide. They are farming us, we are not farming them."

Yeah, but soon, the joke will be on everybody and everything on this planet - vegans, vegetarians, carnivores, omnivores, fish, cattle, people-eating plants, baby pandas, babies who eat pandas, etcetera, etcetera, because... spoiler alert:

_{^{Soylent Green is People.}}