This is how nature works.
Vegans take note.
Well done, Sherlock. Apart from Lions have a much higher stomach acid pH to break down meat than us, and their bodies are designed to deal with what comes with it. You don’t see a lion developing heart disease or cancer from meat, do you?
Some animals eat their own shit, just because its natural doesn’t mean we should do it too. We are intelligent and sufficient enough not to HAVE to kill other beings to survive. In fact, our such high demand for meat is killing other humans.
Take note.
The teeth in your mouth (part of your digestive system) aren’t sufficient hunting tools to kill the animals you eat. Apes don’t naturally eat animals, they eat plants.
Y’know, there are a ton of valid arguments for vegetarianism and veganism—incredibly good arguments, actually (biological, moral, social). But none of the shit you two wrote is one of them.
Firstly, you don’t actually see people developing heart disease or cancer from meat either. It’s not Step 1) eat meat; Step 2) die. There are a variety of factors, and the link between red meat and those diseases is due to lifestyle. And, in captivity, you do actually see lions developing heart disease. And gorillas. And many other animals. It’s not the diet; it’s largely the sedentary lifestyle. And you do see wild animals get cancer. In fact, scientists say cancer kills almost the same percentage of animals in the wild as it does humans.
Secondly, if you’re going to mention how much better-suited lions’ digestive systems are to eating meat than humans’, then it’s really dishonest to not also mention how absolutely craptastic the human digestive system is at digesting vegetables. Because, in our current stage of evolution, our digestive systems aren’t actually capable of digesting raw plant material in any efficient way without aid. And, when we aren’t digesting food well, we’re not absorbing the carbohydrates, protein, fat, vitamins and minerals we need to thrive, which can totally lead to malnutrition, digestive disorders like IBS, and, yes, even cancer.
And, because militantweasel brought it up, let’s actually talk about animals that eat their own shit: gorillas do. And do you know why they do it? It’s because they don’t eat meat. They have very similar dietary needs to ours, but they can’t pop into a pharmacy for a multivitamin—and the only appreciable way to get Vitamin B12 that isn’t from meat or a supplement is to eat your own shit… or someone elses’.
And speaking of apes—because degaussme brought it up and they’re our closest relatives—they don’t just eat plants (and shit). All of them also eat insects; it’s a minor secondary source of B12. And chimpanzees and bonobos do, in fact, naturally eat meat; they’ll even hunt and eat other primates. Also, all apes, even those that are pretty much exclusively folivores, have digestive systems capable of digesting meat.
And, unlike other apes, people aren’t just capable of digesting meat, we’re actually well built for it because humans evolved by eating meat and cooking. If both those things hadn’t happened, we wouldn’t be humans as we are today. To have evolved here without both, we would have to spend half the day eating and eat like 15+ pounds of raw plants every single day.
As for the argument about our teeth not being capable of killing prey, well: you can’t logically exclude the use of tools for procuring meat—which is what the teeth argument does—without also excluding the use of tools for procuring vegetables, preparing food, and creating dietary supplementation. And, I mean, not only is that argument proven ridiculous by animals’ frequent use of tools, but it also has you literally eating shit or termites every day.