Someone who takes sadistic delight in the prospect of another man being subject to homosexual rape is a hell of a lot more disturbing to me than anything this guy could have done to a puppy.
Right off the bat, imprisoning this guy is an indefensible waste of around $60,000 of taxpayer money. He did not harm or threaten anyone, yet he is being punished more severely than real criminals with real victims.
In the long term, this guy is somewhat sick to begin with but he is not victimizing anyone - but after a year and a half in prison surrounded by real criminals, he will come out unemployable and hardened and there is a good chance he will have been turned into a real threat to society.
The guy should get a good ass kicking, pay a week's salary to the county animal shelter, maybe be sent to therapy for a couple weekends. A felony conviction and 18 months in prison is a travesty.
Since your argument is based on profound ignorance (anyone with a clue knows that a person capable of such an act is ALREADY a real threat to society), I dismiss it out of hand.
... he will come out unemployable and hardened and there is a good chance he will have been turned into a real threat to society.
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Here's the rub, my friend. By killing the puppy-who wasn't killed for food, or because it was attacking him-he has ALREADY demonstrated his threat to society! He preyed on something weaker than him and that couldn't properly defend itself...what do you want to bet that several humans might very well fit into that category? THAT is the point.
As opposed to now, you mean. < /sarcasm>