In this version, guns don't kill deer, deer kill deer. The fact is, humans could do more good by policing their own overpopulation than worrying about deer. You'll never hear these concerned citizens spewing about how inhumane it is to let people starve and suffer from overpopulation, and how we should open season on us . If you still think we need to kill deer to prevent them from dying, read more on why hunting isn't actually good for animals , and is not the best solution to overpopulation problems. PETA also has brief hunting FAQ that addresses hunting vs factory farming, overpopulation, and hunting for food.
Humans are at the top of the food chain.
First off, there's no food chain, though I'll begrudge you a food web. True carnivores, on the other hand, are designed to digest meat safely. E.g., they have short smooth intestines that expel rotting meat quickly. Human intestines, on the other hand, are twisty, puckered, and long, so meat just sits there and rots, priming you up for colon cancer. We need to meat to be healthy.