I cannot butcher rabbits bc I had them as a kid. I started off with one layer, who died eggbound. I decided that the next group would lay and then be eaten by us. I do not name my chickens, and I believe that they have a good life. Heck, I collected eggs late in the day yesterday and I collected 12 eggs from 12 hens. If they weren't happy and healthy THAT wouldn't happen.
They have to kill the chickens that you buy at the grocery store and eat in a restaurant, or lay the eggs that you buy. Many of those chickens live out their entire lives in a tiny cage. Mine have a large, safe, wooden coop with great shelter and great ventilation and a 12' x 30' run.
Only my dog lives better.