Look i used to go shooting on occasion myself for foxes, rabbits and so on. Now that im involved more with Fauna rescue work. Its not so much. (for some reason) I see exactly what ELAPID is saying tho. Its not the act of shooting itself. Its perhaps the thought processes that are behind it. I guess what im trying to say is that If you go out for the 'thrill' (and pig hunting is pretty intense) or Enjoyment of the kill. What questions does that raise? Do you enjoy killing? What happened to you as a child to take pleasure in killing? I understand that this affection is for only a few shooters out there.... but there is enough of them.
ON THE OTHER HAND! The human instinct to kill is perfectly natural.... its not disgusting, its not even weird. Its actually quite normal from an instinctual point of view. Those little endorphins that get released after a kill or intense hunt is probably part of our survival strategy. Every shooter will justify their hobby to themselves and that is what matters. regardless whether its for feral control, humane ultimatums or pleasure.
but the question must be asked.... Do you enjoy killing??