Cows frequently survive several seasons, even on commercial farms. Milch cows can go several years. Wild herbivores spend every waking minute either eating or watching for predators who will eat them alive, not at all an easy death. You have an over romanticized view of domestic animal life if you think they all want to be "free" rather than live in an enclosure which is inspected for cleanliness and frequently even heated or at least sheltered, and not have to worry about food or predation.. Animals in general are not easily domesticated and I think the ones we have been successful with actually like the situation. Hell, I know PEOPLE who would regard an animal's life as better than the "freedom" some conservatives want to give us.