Pedophilia can be something you're born with. It's not an addiction, although pedophiles can be sex addicts and are often given addiction-type treatment. As a sex addict, I'm convinced we fail these people in ways that increase our risks.
Or, more specifically, what's wrong with taking a steroid, while you're pregnant, to try to increase the odds that your female fetus will someday grow up to be a straight woman who gives you grandchildren, and not a lesbian daughter more interested in puppies?