Ruminants like cattle, sheep, etc have existed naturally for over 50 million years. They are an essential component of prairie land ecosystems. And much of the land that they occupy is non-arable for crops.
Red meat is the closest thing to a natural human diet there is.
https://www.timesofisrael.com/for-2-million-years-humans-ate...
For 2 million years, your ancestors basically ate the diet from this article. Our biology is highly evolved for it, with agriculture being < 500 generations old.