New farm bill would condemn pigs to a lifetime in gestation crates

lab grown meat is cancer. Good luck eating that.

Neither system has ever existed in its purest theoretical form -- probably cannot, and even more probably should not.

I don't think this is a useful point of argument.

Also many domesticated animals would be completely extinct if we didn't eat or farm them, which isn't a great prize, but it isn't nothing either.

Personally I don't believe, until energy is so plentifully produced to be approaching on free for individuals, that we can even really afford to forgo animal agriculture. Oh yeah sure, we use farmland to grow animal feed and not human feed, but the animal feed we grow is often much easier to grow, and in many cases reduces artificial fertilizer usage which is a huge usage of fossil fuels. Take cows for example, they are fed 90% grass or alfalfa to grow, yeah their last month or two of life they are given grain to fatten them up (which is optional but customers prefer it), but that alfalfa they ate for 90% of their growth required no fertilizer or pesticides, and even produces nitrogen fertilizer in the ground, while harvesting consists of mowing it down and packing it into bails, and can be stored for years almost anywhere, including outside or in just random pits or 100 year old barns. Dent corn does require fertilizer (especially if you don't rotate with alfalfa or other legumes), however dent corn can also be stored for years with no more processing than is done within 10 seconds of harvest by the combine that is harvesting it, and can be fed to animals directly, while sweet corn is far more delicate, less fertilizer efficient, and doesn't store for long without refrigeration, canning, or freezing. Also animals like pigs are often fed otherwise bad or inedible food.

Meat/animals it also a great emergency store of food for disaster. A volcano can reduce global yields by 30%, and while crop subsidization will help as we might have an extra 10% growing to start with, that still may end with shortages because people keep fighting crop subsidization to keep it low not understanding why it exists (to prevent famine which it has successfully done for over 100 years in every country that implements it). But you can give yourself an extra few years of food from animal stores by slaughtering them down and feeding them on old animal feed stockpiles, either just to wait for overall crop yields to increase again, or to give time to increase farming efforts.

In a more ideal world I would definitely go along with reducing or even eliminating most animal agriculture, but in the world we currently live in it seems like a liability to me. I simply don't trust the people controlling most of our capital and wielding most of the power of human civilization to manage it well enough now or anytime in the near future. Not to mention the educational requirements to most cultures to switch to a pure vegetarian diet without all sorts of side effects from poor nutritional balance.

Some of the loss likely is due to keeping them penned up, however there are also losses for not keeping them penned up and letting baby pigs run among a herd of many adult pigs, some of which will attempt to kill piglets, especially females who have not had piglets yet. Pigs can be absolute viscous as hell and will readily eat other living animals if they think they can get away with it, including other pigs, and some mother pigs have been known to cannibalize their young even under ideal situations. Pig farmers have themselves been killed by pigs from passing out or getting knocked out in pig pens and the pigs seeing them as a free meal not to be wasted.