I have an observation....
As far as I am aware no religion that I know of explicitly forbids cannibalism.
Why?
And does this mean it's OK?
And if it is wrong, why?
What is actually wrong with cannibalism?
And no, I am not a cannibal and neither do I condone the practice indeed I find it distasteful, but don't know why. I suppose I just do.....
Carnivores typically eat animals that eat plants. Carnivores do not typically eat each other. They may fight and kill each other, but not for food. Human eat cows, chickens, lamb. Pork is not treated the same in all cultures since pigs are omnivores while the rest are vegetarians. Most cultures do not eat cat and dog since both are carnivores.
The unspoken rule in nature is carnivore meat is to be avoided, since it is more likely to be infected with disease and parasites. Lions, for example, go after the weak and sickly since they are easier to catch. This causes their diet to be somewhat compromised, compared to a gazelle that eats healthy live grass.
Since humans are omnivores, and will eat meat, the natural rule applies and humans are treated as carnivores; compromised meat. But humans have will and choice and can choose unnatural behavior. Some may even rationalize it as the new normal. Most people maintain the natural code and avoid cannibalism, except when this is the lessor of two evil; starving to death.
Some cultures will eat predator animals like dogs and lions. This is often done for male fertility. The risk against the natural taboo seems to create a placebo enhancement.