The taking of the spirit or soul into you is a good one. You can then say that it prevents undead and the person will be born again in the off-spring. You can work a whole myth around this one.
Lack of resources. If a land is too poor or has been used too heavily then it may happen. War, chaos and hardship are prime examples when this happens. (1800 whaling ships when they would start to run out of food would cut a mans hand or leg off and cook it, calling it long pork.)
Lack of resources. If a land is too poor or has been used too heavily then it may happen. War, chaos and hardship are prime examples when this happens. (1800 whaling ships when they would start to run out of food would cut a mans hand or leg off and cook it, calling it long pork.)