>>938226076 (OP)
Humans need meat to survive and stay healthy, as does any carnivore/omnivore. We are simply incapable of breaking down certain protein chains to derive the various nutrients we do need from them and so a meat-less diet can lead to various serious complications unless you are monetarily capable of affording more expensive alternatives and additional supplements, and even then those cannot trully replace meat in our diets. For children growing up witholding meat from their diets in particular can lead to stunted growth, weak immune systems/bones/muscles, and various other chronic conditions later in life.
Meat as an industry, is for these reasons likely to never truly go away unless we fundamentally change what we are. And is here to stay no matter how you feel about the issue. Parents will want the best for their kids, poor people will take the cheapest solitions available to them, because realistically there are no practical alternatives.
Does this make factory farming ok, from a moral standpoint? Probably not, but feel free to come up with an alternative. We simply can't get rid of it without simultaneously kneecapping ourselves and making future generations weak and sickly.