I think you're misinformed. As parent request, you need citations to support your honestly pretty wild claims. Land used for growing livestock feed would in a

I think you're misinformed. As parent request, you need citations to support your honestly pretty wild claims. Land used for growing livestock feed would in a very large part be just as suitable for human food production, and we wouldn't even use that much of it. Ruminants are not any kind of necessary part of food security, on the contrary -- without livestock large parts of current farm land could be released back to nature. Nobody is suggesting to eat "natural plants" as neolithic gatherers might have done.