Prison sentences ALONE, are not very effective in stopping this kinda thing. I mean, surely its a mental illness? Just because he's going to be locked in a cell for a few years, its not going to stop him being sexually attracted to minors is it? I'm talking here about the crime of being a paedophile, not being a rapist, which should obviously demand a hefty sentence and particularly more so if carried out on a minor. I will probably get slaughtered on here for saying it but, I personally don't believe its a conscious choice that someone chooses to be a paedophile, just like homosexuals don't just decide to start finding the same sex attractive, its always there in their mind, from birth maybe? through traumatic experiences? For me paedophiles need serious mental help, not ONLY locking in cells.
PS I'm not a nonce sympathiser, I'm more concerned for their future victims when they get out and re offend. I'm not sure of any particular statistics, but I'd bet a fair number of them don't suddenly stop being paedophiles when they get out of jail.