It's strange...but I don't normally have to keep mine at arm's length to be able to raise them, love them, enjoy them....and then process them. Yeah, it seems to hurt a little more if/when I have to kill a chicken that I really like, but I go into the whole process knowing that will happen one day.
So I enjoy each day they are alive, feel some sadness when their life is at an end and go about my business.
It really is a model for life and helps one develop coping skills if it is approached in this manner. Just like giving the kids a dog when they are little, knowing that one day the dog will die and the kid will still be alive to feel the sorrow of its passing. Does that keep you from buying the dog? Probably not. Everyone eventually learns the fact of life is that it ends for us all. No exceptions.