They kill for the pleasure it brings them, they kill for the joy of killing
If that were the case....wouldn't they kill indiscriminately? Why spend all the time and money hunting for a trophy when simply killing is what brings pleasure?
When I hunt whitetail deer, I don't kill every deer that I see. I'm hunting solely the older mature trophy bucks. I'm letting all others pass. If you feel that I'm heinous and immoral for this then I can't help that.
I grew up hunting and where I live this is culturally accepted.