Gardner (1992, p. 594) notes that the father may rationalize that pedophilia is an ancient tradition, a worldwide practice, and that there is nothing at all to be guilty about.

In addition to feeling sorry for his own misfortune, the father should be helped to feel pity for the child for having been "a victim in a society that considers his [the father's] behavior a heinous crime and/or a mortal sin" (Gardner 1992, p. 592). If the father feels no guilt, then the therapeutic goal is to increase it. Gardner (1992, p. 594) notes that the father may rationalize that pedophilia is an ancient tradition, a worldwide practice, and that there is nothing at all to be guilty about.
http://www.leadershipcouncil.org/1/res/dallam/2.html