Gordon Ramsay absolutely is not sheltered. He has killed and harvested his own animals many times.

As for hunters not doing this, I think you don't know many hunters. I'm a hunter, have many hunter friends, and talk hunting with people any chance I get. I've never met a hunter who wouldn't be ok with this(or even do it themselves). Granted this is anecdotal evidence from both of us, but still.

Also, some people genuinely don't care about the animals we raise specifically for food, that's all they are to them (I fall into this group). I see their lives as ours, they exist solely to feed us. That doesn't mean I think they should have shitty living conditions until their time comes, they should be able to enjoy what little life they have.