Well biologically the person has inherited some genes that function in such a way as to lead to their obsession with young people. At the end of the day this is very much a mental problem that can be remedied with bioengineering. Not much else you can do for these people.

To criminalize it in all of its forms, is the same thing as criminalizing any sexuality. Perhaps one day we'll create an algorithm that can generate these images without anyone being involved -- does that sound distasteful as well.

At this point even artful depictions of a sexual nature are illegal, criminal offense.