There is a point to my suggestion.
I discount people who are in the clueless category. I have a good idea they would instantly become the most ruthless predators on the planet at the drop of a hat.
The dinner for the mantis. Ruthless. Unadorned. Without conscious thought. I do know people like that.
But for the most part, people who kill to eat, whether it be a plant or animal, do so WITH a conscious thought.
I can't say whether the Mantis has a conscious thought. there is a communication problem there, maybe they do, maybe they don't. What is obvious is that they don't dither about dinner.
Humans may be awestruck by the beauty of the critter they harvest for food, Most hunters I know are thankful to The Almighty, and even the animal itself for providing. Not without a conscious thought (If I shoot that deer here, I have to drag that sucker all the way back....maybe I should shoot something closer to the pickup and nearer to the top of the draw) do we take game, or even domestic animals.
I have passed up more shots than I have taken, either because the doe was still nursing, it wasn't a 'good' shot, or, even with some critters I wouldn't eat but which are commonly regarded as pests (foxes, mainly) or good pelts, because I saw no point in killing something which to me would serve no purpose--or even only result in a slow and painful death for an animal I might not recover. Sure, there is thought.
My mother raised rabbits for food--my grandfather was a diabetic, and they fit in his diet well--but would not name the 'food' rabbits, who were collectively referred to as the 'dumbbunnies', and attributed no anthropomorphic characteristics to them (unlike the breeding stock, who were almost pets), because it made the fateful day of slaughter a little easier.
We should never take a life without conscious thought--however brief--The Almighty made that critter for some purpose, to provide food, test our patience (flies!), to thin the herd, or keep us humble, and they do all of that and more.