Since Ves was not making much progress in convincing Ketis to drop her objection by resorting to othering, he decided to switch tracks.
He saw that he could reduce her discomfort towards using the souls of original humans as a resource if he framed it as a second chance.
"If you think about it, I am doing the folks over in the old galaxy a favor." He said with greater confidence in his voice than he actually felt. "Sure, most of them will either end up being devoured by demons, but at least they can live on in another way. They can rest easily knowing that their lives had meaning. They have made a small but meaningful contribution to the defense of fellow humans who have the misfortune of being trapped in a wartorn dwarf galaxy."
"I do not think that a cow will feel grateful or fulfilled due to the fact that his flesh is being used to fill people's bellies in a restaurant." Ketis sardonically remarked.