As Bakes said they are numerous and when you don't have anything else to hunt and the urge to use your rifle is strong then they are the only choice.Other animals are hunted only in the season but for pigs there is no season(not around here at least)and so when we are bored and would like to do some shooting we go out and kill a few pigs.Besides we are also doing a public service for the farmers whose farms are regularly destroyed by these animals.