[MTVN]

This article addresses quite a lot of the issues, this is what it has about innate vs learned

there is a growing conviction, notably in Canada, that paedophilia should probably be classified as a distinct sexual orientation, like heterosexuality or homosexuality. Two eminent researchers testified to that effect to a Canadian parliamentary commission last year, and the Harvard Mental Health Letter of July 2010 stated baldly that paedophilia "is a sexual orientation" and therefore "unlikely to change".

Child protection agencies and many who work with sex offenders dislike this. "Broadly speaking, in the world of people who work with sex offenders here, [paedophilia] is learned behaviour," says Donald Findlater, director of research and development at the Lucy Faithfull Foundation, a charity dedicated to preventing child sexual abuse, and, before it closed, manager of leading treatment centre the Wolvercote Clinic. "There may be some vulnerabilities that could be genetic, but normally there are some significant events in a person's life, a sexually abusive event, a bullying environment … I believe it is learned, and can be unlearned."

Chris Wilson of Circles UK, which helps released offenders, also rejects the idea that paedophilia is a sexual orientation: "The roots of that desire for sex with a child lie in dysfunctional psychological issues to do with power, control, anger, emotional loneliness, isolation."