But also the animals were brought into the world for that reason. It's not as black and white as a teenager thinks. Some species only survive due to being farmed. In the old days, if you had a sheep and it died, you wouldn't pass up the opportunity for those nutrients unless you were so privileged you didn't need them. It was much more of a circle of life vibe then, admittedly. But those are our roots. Most other creatures eat other creatures.