You are incorrect in your assumptions. Victims are a huge part of what is done here too. Many want their perpetrators to do better - to be better members of society, they want justice but that doesn’t always look like locking people away.
but as you say they will come out and if this is what’s done, they will offend again. But that’s ok, if they only do it every few years?
there are very few people on whole life sentences who won’t come out at some point. It also costs an exceptional amount of money to keep someone in custody or sectioned. Public costs would go up hugely - are you willing to pay this? It would not be small increases in taxes etc it would be HUGE.
then it would be ‘I’m not paying to keep these people’ - they can’t pay towards it or for it themselves if they aren’t allowed to be part of society FYI. What do you suggest then?
Your view/argument is a very much ‘I don’t care’ but also screams of an ‘I don’t understand’ how the system or people work.
if we can rehabilitate people they can then contribute towards society, both socially and financially. This is actually largely successful overall. It’s not possible with everyone, no, there will always be some exceptions, but they are fewer and further between than you think - they are just the ones who make the media.
Your way of doing things would see all those people who could be rehabilitated turning into more of the people who can’t due to the experiences of what you suggest is done to them. You would actually make the problem larger on scale of people, and with so many in and out constantly, you’d end up with an almost constant stream of some of them committing offences and as a result more victims.
Your time would be better spent offering it in some of these areas to get an understanding of how it actually works. You can volunteer to work with victims, if you don’t want to go anywhere near ‘these children’