[unspun]

Serial killers tend to get their start in part, by killing animals for the enjoyment, yes. It's a part of the psychological interview process with suspects, to ask.

This of course is very different than healthy hunting (including food, or in rare cases, for culling or protection of livestock). Killing for a mere "trophy" is somewhere in between.

It's all about what exactly one gets his "joy" from -- and that dictates what one does, and how he does it.

[mjolnir]

I fail to see why someone who hunts and kills an animal is therby obligated to eat or otherwise “not waste it”-— either way seems, to me at least, an equally “healthy” form of hunting.

Are you sure that there’s any statistical connection at all to serial killers and sport hunting?