Band,
I enjoyed reading your post and discovering you had investigated writing an op-ed for the NYT. For what it is worth, my view of the matter is close to yours. I see you were refering the the power of the sex drive in general and not this specific one in particular. It is true, we humans frequently do mad things for this drive, putting ourselves in all manner of risky situation.
Although some offenders take dramatic action to stop from re-offending, it is also worth pointing out some who have never offended also make great effort to never offend. If they were to tell some on this thread that they are a pedophile but are working hard to be safe and want others to know to increase safetly, some would want them dead. The thinking being they cannot be helped, are monsters, are evil, etc etc. Others, such as yourself, have a much more nuanced understanding of "want" and "do". We are betting served as a society to help these people. That is what I understand the article was saying.
Right now the proliferation of child pornography is exposing thousands who have the inclination and have never acted on it, beyond hoarding hideous images and videos. We could kill them all, we could lock them up forever, or we could treat them effectively.
As for treatment, the greatest proof it works is the significantly lower recidivism for those who complete treatment as for those who don't. The links are a few years old, but good old cognitive behavioural therapy [CBT] has success in controlling impulses - not eliminating them.
National Review of Medicine - http://www.nationalreviewofmedicine.com/issue/2006/09_15/3_patients_practice02_15.html
Institute of Health Economics, Edmonton - http://www.sexual-offender-treatment.org/93.html