They're only problems if a society thinks they're problems. These are nothing more than culturally-defined pathologies. If psychology buys deconstructionism, it will de-construct itself from within. Psychology always represented the practical application of a philosophy. You have no philosophy, you have no meaningful psychotherapy.
Most clients come in with a problem.
There's something going on their life that is not working for them, and they want the therapist to help them with that. But I know of no convincing evidence that even pedophilia is harmful to the boy. In ancient Greece, for example, a pedophilic relationship with a young boy was viewed as the ideal kind of relationship for an older man. Second, children tend to interpret sexual use of them by an adult as a betrayal. Later in their own adulthood, they often feel compelled to reenact the molestation again with children who trust them.