Cows consume far more food than they produce. If you want a sustainable food supply, become vegetarian. Also, the methane produced by cows has been shown to be a major contributor of greenhouse gasses causing global warming.

Growth hormones injected in chickens and cows are also major contributors of weight control problems and the rise in cancer amongst the US population; as can be compared to the German population that does not allow growth hormones in their animals.

There is certain expenses and costs owning livestock, especially oning one, and especially owning one in a heard, and having it rasied a particular way (diet and things). Yes RFID and computers can help, but the systems to implement that on a feedlot would be costly.

The way to go, IMO, is to have a livestock rasiing co-op, where one buys a share in the organisation as a whole, rather than an individual head of livestock.

Our vegetarian friend seems to have forgotten that at one time (and not too long ago) there were MILLIONS of bison roaming this great land. They provided food, clothing, housing (teepees), and transportation (canoes). I don't think the Indian was concerned that the their world would end as they knew it.

Bison were totally grass-fed and did not produce "gas". As a matter of fact, if everyone would eat properly (organically) and feed our food livestock grass instead of grain to fatten them, we wouldn't have to worry about that atmosphere-destroying "gas". Further, if mankind would eat the way he was meant to eat, meat or not, then mankind wouldn't produce methane "gas" either. Something to think about...on the other hand, we could be in deep kim-chi.