Like @everephebe mentioned, acts of cannibalism rarely have anything to do with nourishment, and it certainly never occurs on a daily basis. Cannibal tribes may eat the flesh from their fallen enemies, because through this, they believe to pay respect to fallen warriors/gain their strength/whatever else. Cannibals usually spent (or spend, if there are any left) a good portion of their time hunting and gathering.
As for cannibalism in modern society, it can often stem from a mental disorder, feitsh/obsession gone too far…whether it’s ’‘right’’ or not though, it doesn’t abide by modern society’s standards. It would also be considered murder.
You should watch this movie, Grim Love which is based on a true story. Somebody on here even linked me the now pretty much defunct site on which the movie based itself. It just shows printed screens. A website for cannibals to meet and talk, and these two dudes got together, and one ate the other. The movie is kind of laughable, but it’s one of those that takes ’‘based on a true story’’ seriously, and stays with the source, rather than taking one element of it and making something else altogether.
Cannibal Holocaust is an extremely disturbing movie, however it provides authentic information about cannibalistic tribes.
Errant thoughts haha. But yeah, we don’t practice it because killing is illegal, and even if cannibalism was meant as a daily source of nourishment, we don’t need to resort to that.