Feral pigs are wild , dangerous and do indeed attack and can do serious damage, even kill.They are in plague proportions in my country and destroying huge amounts of crops and even killing new born lambs.
Why hunt something cute? To eat it. That lamb on your plate was pretty cute at one time too
Personally I'd rather eat a wild harvested animal than a farm bred, steroid/chemical filled beast.
People all around the world have been eating dolphins, dugongs,seals, whales and anything else nature provides ever since we learned how to catch them.
There is nothing "dark " about it unless you grew up in a "food comes in plastic wrappers" society but let's leave it at that as this site is about Japan.