Reason #4: People really, really don't want to butcher their own meat.
Out of sight, out of mind. As long as people can buy a package of
chicken thighs at the supermarket, they are not going to do the work of slaughtering, plucking, cleaning, and cutting
chickens from their back
yard.
A hundred years ago, when the majority of Americans lived on farms and had a few
chickens, a chicken dinner was a big deal and few people ate chicken more than once a week. Nowadays, people in CHFOs (
Confined
Human
Feeding
Operations a.k.a. "cities") get their food from CAFOs, and chicken is the lowest cost meat on the menu.