It is the purpose of killing. Food/Pleasure. Please don't unite the two.
Pulling a trigger and watching a great animal bleed to death in pain for personal pleasure so as one can place his/her foot on it for a heroic photo shoot. Make handbags out it - perhaps cutting head off to hang in their home. That's a Sport?
Torture a bull by spearing it, then as it's bleeding, drive a sword-blade through its brain for the pleasure of watching. Cheer the swordsman.
Nothing to do with hamburgers.