Why is is especially horrific and savage when Roberts says you want a real pig because you've got to kill him?

In this context, Roberts' statement highlights the brutal reality of survival and the harsh choices individuals must make in dire situations. The phrase "you've got to kill him" emphasizes the violent act required to obtain sustenance, illustrating the moral complexities and savagery of human existence when stripped of civilization. It evokes a sense of Horror not only at the act itself but also at the dehumanization inherent in reducing life to mere survival. This chilling moment underscores the loss of innocence and the depths to which people can sink in desperate circumstances.