I don't disagree with your sentiment. But before that, I want to live in a place where every conviction made by the State is truly fair and trustworthy—definitely not in Brazil. Here, the justice system bends as much as necessary for certain people, while for others, it is extremely unfair. There are many examples of mothers who have falsely accused their partners of abusing their children. Some of these men are raped or killed in prison by other inmates, yet it is not uncommon for the allegations to later be proven false—or for the mothers to confess that they lied out of anger.
Discussion
You'd spare all the pedophiles because the process of justice is not perfect?
"It is better that ten guilty persons escape than that one innocent person suffer."
Blackstone's Forumulation, based on the same morality found in Yahweh's mercy on Sodom and Gomorrah from the Bible, is a longstanding ethic on which US law is based.
This is where we get the idea of "innocent until proven guilty," and while this is a good starting point, there are many people on death row (or that have been put to death) who are later exonerated.
The alternative is that you're guilty until proven innocent, and under this system, there is no incentive for following the law because you're presumed guilty by default.
I think that's what the commenter was getting at... Not that you'd "spare all the pedos," but that the state gets most things wrong, including criminal convictions.
I like the idea of banishing violent offenders to an island. No food, no water, no shelters, no supplies: straight survival. And they're not allowed to leave or come back.