What is the "disgusting hypocrisy of cattle farming?" The term "happiness" is an anthropomorphic emotion term to describe animals not living in the distress so well characterized by Temple Grandin. The theory is growing the animal in a low stress environment leads to a higher quality product. Given the scary prions which spread in part by feeding cows to themselves, it makes sense to avoid some of the conditions humans often find aesthetically or morally objectionable.