If we were to look at the worst of the worst, which we have here, I don't think we need to be psychiatrists to understand that there is something wrong with these people and it is going to be very difficult for society to accept them back into the general population.
Having said that, there is an opportunity for them within the system to apply for parole, albeit a long way down the road. Many of these offences are committed by people who are in their twenties, so they would still have the opportunity to have parole eligibility 40 years later. It seems like a long time, yet it's not a long time if you're the victim's family. Is that the sense you get?