No, that's not what I'm saying at all. At the risk of getting philosophical... here we go.
IGNORE THE FOLLOWING IF YOU JUST WANT TO READ ABOUT VOYNOV
Free will is a myth. Everything we think and do is a product of our brain chemistry, which was designed by our DNA and influenced by the totality of our life experiences. If you think you're making 'choices', you're either aware of some heretofore unknown supernatural force, or deluded.
When you come to terms with this, you'll understand that it's silly (and deplorable) to seek vengeance against even the 'worst' people, like pederasts and serial killers. They're slaves to their brains just like the rest of us. We should, of course, endeavor to separate these sorts of people from the greater society for the well-being of the many. In the case of Voynov, I'd say his chances of recidivism are remote. He deserves the opportunity to learn from his mistakes and find happiness. Should he violate our social contract again, and show that he isn't capable of reforming his actions, that's an entirely different story.