What? How can a diet that encourages eating large quantities of meat be considered a friend to the anti-factory farming movement?
The Paleo Diet preaches the consumption of pasture raised, humanely treated meat and eggs. The emphasis is on the fact that these foods are more wholesome, and therefore better for humans than factory farmed meats and eggs, but the side effect of supporting humane farms is a welcome one.
Animals raised on pasture and slaughtered humanely produce healthier food: more vitamins, a better fat profile and fatty acid ratios, no unnecessary antibiotics, and less stress hormones.
In short: eat only happy, healthy animals (or products from those animals) and you will be a happy, healthy human! Remember: you are what what you eat eats!