Follow my advise that I alraedy said above: being determined is enough. Make sure society is safe from them, and lock them away.
Never love the other too much - you do not know if the other later changes and hates you in return, or you learn to hate him.
Never hate the other too much - you do not know if the other later will learn to love, or you love him.
Being determined in protecting society from them - really, that is enough. i do not know if after 2o years these rats will have turned into better or worse beings - karma will get them what they deserve anyway for all action has reaction, and what foce you inflict inevitably returns, and as long as we are safe from them, they are not of any further interest for us anyway.
And you probably are neither worthless, nor stupid, DI! You just allow your emotions to take over. Imagine what Yoda would have to say on that.
