Perhaps this is the problem.
Hunting is also killing things. It seems every politician these days talks about shooting birds, deer, fish etc as if it is simple entertainment.
Eating creatures is something most people do because they wish to survive. Protein is an important part of a diet. But to kill a creature for fun is grotesque.
There's something bronze age about the attitude to nature in play. As if it is endlessly abundant. As if man isn't merely a creature amongst others. As if death has no meaning.
For such people, hunting other humans is just a single step further. Scary thought.