I think it's sick and wrong, but of course, intellectually I have a problem with large-scale farming anyway. There are a lot of things I have a problem with, living in a modern, "civilized" (yeah, right) world.
Now that we're making money again we buy only free-range meat (and we drive about an hour and 15 minutes to get to the closest place that sells it, although a local butcher can order it - it's just a lot more expensive that way), and we've been buying only free-range eggs since I can remember. But all of these items are expensive - usually a lot more expensive - and when times are tough, most people, including us, can't afford to demand free-ranging meat.
The problem as I see it, in certain instances, is one of scale. Pig farming I'm not sure of. I do know we'll pay for the massive use of antibiotics some day - likely within our lifetimes. But most countries are net importers of some type of commodity, be it wheat, beef, soy, whatever. We will reach approximatey 12 billion people on earth by 2010 - 2012 (depending upon China) and that should double by around 2020.
Is there physically enough land to feed this many people? Even if we're all vegetarians (highly unlikely!!)? I'll probably have nightmares tonight... makes me think of the movie Soylent Green.