I mean this in the nicest way, but maybe you should look in the mirror and punch yourself?
A person with the means to travel between two continents (as your location would suggest) does not kill to eat. You may eat what you kill, but it's a trophy none the less, just one you choose to digest rather than mount on the wall (maybe both?). Just think if every American family decided they needed to harvest a few deer this year. Well, there are about 30 million deer, and just over 300 million Americans, so if we all "killed to eat" like you, there would be nothing left to kill in short order.
If I am wrong about you, and you are forced to supplement your diet with wild game due to your financial circumstances, I apologize.
Just so you know where I am coming from, I do not hunt, I fish and I do it for sport. Sometimes the fish die. When that happens I use them for bait, or clean them and either eat them myself, or give them to someone who will. I have caught some "trophy" fish but never had a fish mounted. I make no excuses, when I go fishing it is to amuse myself at the expense of the fish, and I have no "need" to wet a hook. I have enjoyed doing this all my life (from the age of about 3 or 4 judging by pictures of me holding up fish I had caught with my grandparents).
So while I personally would not shoot a panther for my own amusement, I really can't accost a guy who would. Especially if it is done within the confines of the law.