I stand by my comment about needing livestock from the view that the anti-meat folks generally want to get rid of livestock: Ergo, no milk/cheese/eggs.
Lotsa land suitable for ranching without doing the feedlot thing. Feedlots are merely more efficient for dealing with large populations in a just-in-time supply system. Most ranchland ain't worth a hoot for any sort of farming without irrigation. The early folks in Kansas, for instance, discovered this the hard way.
Trouble is, you can mine an aquifer just like an oil well or a gold/iron mine. At some point, the water table gets low enough that the pumping cost makes the whole effort uneconomical. Search for "Ogalalla Formation"; the Ogalalla underlies the Great Plains of the U.S. and the recharge rate is very low.
Might's well use it for ranching. Irrigate in the higher-recharge areas.
Trouble with irrigation is that the ground eventually gets too salty. Ain't that neat?
I haven't kept up with the growth hormone deal since Stilbestrol was outlawed, some years back. My personal opinion is that for flavor without condiments, a four-year-old grass-fed steer, grained for maybe a month before butchering, is the best. I occasionally can find that over in Mexico, but that's pre-WW II for the U.S.
FWIW, the best guesstimate for organic food production is that the world can support a population of some 3.4 billion. Trouble is that we're now at approximately 6.7 billion. Oops. Hope oil stays cheap and limitless...