Not cats. Cats kill for fun. I'll admit that my housecats, by virtue of boredom, are probably more vicious than your average wild lion. But anyone who thinks cats don't kill for entertainment doesn't spend much time around cats.
Far as the rest of it goes...
I have a personal problem with trophy hunting. I think it's abhorrent to kill something that isn't threatening you if you have no need to or intention of eating it. I even have guilt pangs about trapping mice, and they are technically threatening my family (property damage, fire from chewed wiring, destroyed food, vectoring hantavirus and Y. pestis and such). I feel pretty crappy about sheep ranchers shooting coyotes, and the 'yotes are definitely threatening their livelihood.
However. The way people have chosen to behave over this demonstrates, very clearly, all the completely sh***y aspects of human nature that make it so much easier to empathize with a lion. Good grief.
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"Alas, our dried voices when we whisper together are quiet and meaningless, as wind in dry grass, or rats' feet over broken glass in our dry cellar." --TS Eliot, "The Hollow Men"