Please go search for Joel Salatin and read what he has to say. Here is one article I read yesterday. Most of his other articles and speeches are way better than this one, but this one answers some of the myths you are currently holding.
Does anyone else wonder what would happen to the world if Paleo became mainstream?
I think this Paleo malarky needs to stay underground. At least for the sake of the planet.
Sustainable Meat: No Myth - Weston A Price Foundation
Female, 5'3", 48, Starting weight: 163lbs. Current weight: 135.
Starting bench press: 30lbs. Current bench press: 77.5lbs.