It is interesting that in western society (and perhaps society in general, I don't claim to know) cannibalism is considered one of the most horrifying things yo

It is interesting that in western society (and perhaps society in general, I don't claim to know) cannibalism is considered one of the most horrifying things you can do... except in cases where it is necessary to stay alive. Pretty much nobody faults people for resorting to cannibalism when the choice is cannibalism or death. We might dance around it and avoid talking about it, but we are pretty understanding when it comes to a life and death situation. We see examples of this when people are stuck in the Andes or on a life raft in the middle of the ocean. In situations where negligence of the cannibals is seen to have contributed to the circumstances that lead to the necessity of cannibalism, we are a bit less forgiving. For example the Donner Party.