I wrote something for an e-magazine that a friend sub-edits. A snippet:
So long as it occurs between consenting adults, on what grounds can we, as a society, storm the bedroom and insist that intimacy is to be impeded? Feelings of disgust are irrelevant, concerns for offspring ad hoc, and invoking the individual’s ‘greater good’ is just downright paternalistic. There is no reason not to legalise incest now.