BBC Panorama had an excellent episode exploring these very questions. At least I think it was Panorama. I tried searching for it but all I get are hits about Jimmy Savile.

They found a young man who selfidenties as a pedophile, who was actually willing to go on camera and talk about his desires and urges. It was quite fascinating, and I do see many parellels not just to the war on drugs but to homosexuality as well.

We aren't treating these people in a humane way, and IMO we are making the problem worse by perpetuating a Wich Hunt.