Why can't people only eat meat or only eat vegetables? Omnivores are rare and powerful

It is ridiculous for carnivores to claim that they are vegetarians, for herbivores to claim that they are carnivores, and for omnivores to claim that they are carnivores or vegetarians.

What an animal eats is determined by its own conditions, not by so-called "isms". Why do herbivores eat grass? It's not because they like to eat grass and don't like to eat meat. If you put a small piece of meat next to a goat's mouth, it will also eat it, so eating habits have nothing to do with preferences. The reason why herbivores eat grass is the result of the combined effects of internal and external conditions of the body. In terms of internal conditions, herbivores lack incisors and canines to bite meat, and they do not have proteases in their bodies to digest meat. It's okay to feed a goat a small piece of meat, but if you let it eat meat until it's full, I'm afraid it will die.

In terms of external conditions, although herbivores do not subjectively reject eating meat, they do not have the ability to obtain meat, which means they cannot hunt.

Similarly, the reason why carnivores eat meat has nothing to do with liking it. The real reason is that they cannot eat grass. In the food chain, carnivores are always at a higher level, and carnivores that hunt herbivores always give people a sense of strength, but in fact, in nature, herbivores have achieved greater evolutionary advantages. Compared with carnivores, getting enough nutrition from plants is an extremely complicated matter. This not only requires animals to have molars for chewing, but more importantly, they must have a powerful digestive system specifically for digesting plants.

Isn’t it amazing that cows have huge bodies and strong muscles, and that these huge bodies and strong muscles are obtained entirely by eating grass?

What makes this miracle possible is the four stomachs, cellulase, cellulose symbionts, and various intestinal microorganisms that help digestion. If a lion were to eat grass, it would not grow strong muscles, but would soon become emaciated and die of hunger. In nature, carnivores and herbivores compete with each other, accounting for 63% and 32% of animal species respectively. In addition to these two, there is a rare and powerful animal, the omnivore. The reason why omnivores eat both meat and vegetables is not because their mouths are not picky, but because their bodies are not picky.

Humans are the most typical omnivorous animals. In order to tear meat, we have grown incisors and canines. In order to chew plants, we have grown molars that only herbivores have.

We have proteases like carnivores to obtain nutrition from meat. Although we do not have a strong digestive system like herbivores to break down the cell walls of plants and obtain all the nutrients in plants, we can also use sucralose to obtain as much nutrition as possible from plant fruits. People can eat both meat and vegetables, so if we can control ourselves to only eat meat or only eat vegetables, is that okay? No. The reason why people eat both meat and vegetables is not because we can eat this way, but because we need to eat this way.

The nutrients contained in vegetarian food and meat are completely different. Some nutrients only exist in meat, while some nutrients only exist in plants. The nutrients needed by the human body need to be satisfied by eating both meat and vegetables. If you only eat one kind, it will inevitably lead to nutritional imbalance in the long run, leading to health problems.

Why do some people who have been vegetarians for a long time still look healthy? Because they can make up for the nutritional deficiencies caused by a single diet by taking health supplements, but ironically, guess what these health supplements made into tablets or capsules are extracted from? The reason why humans can stand out from many creatures is that omnivorousness itself has a great contribution. Carnivores can directly obtain high-quality protein, so the survival rate of their offspring is higher, while herbivores have a stronger overall survival ability because food is easy to obtain.

Omnivorous animals can be said to have the survival advantages of both carnivores and herbivores, so they are less likely to be eliminated by nature. In this case, why don't animals evolve to become omnivorous?

It's not that they don't want to, but that they can't. It's difficult for herbivores to digest meat and hunt, and it's even more difficult for carnivores to get nutrition from plants. All animals, including humans, should eat what they are supposed to eat. Don't force "good and evil" to be associated with "food habits". As a member of nature, the greatest good is to follow the laws of nature, and violating the laws of nature is the greatest evil. Besides, who says that eating meat is evil and being a vegetarian is good? A pig is cut into pieces and put in the refrigerator. One person can eat it for three months, but only one life is killed in three months. I don't know how many lives are killed for a plate of mushrooms and rapeseed.

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