Ok, Devil's Advocate for the "take em' behind the shed and kill them".
Look at this angle. How many people have been freed AFTER conviction AND appeals because DNA didn't match? People who have spent 20, 30, 40 years in jail have been released because DNA did not match. What would have happened if we would have killed them? That's the ONLY problem I have with death penalty. If there is a SMALL chance the individual might not have done what they did, d.p. should not be applied.
Another cross thought here too.... What if it's your kid who grows up to be the molestor? They're face plastered over the Internet and news? Would you be the first in line to put a bullet in your kids head right after they're convicted?
Punishment should be the primary force in the post legal system. Put people away. But our current way hasn't proved to work. Drugs, alcoholics, perverts... Jail is not JUST the answer. Group therapy during incarceration can go a long way toward helping people understand why they do what they do. If they actually want to break that cycle, they will. Until that happens, this vicious cycle will continue, no matter what the crime was.
Just my penny.