Anyone with the power to do so can 'forbid' anything under the sun. The real questions are what are the punishments of violating that prohibition, and who is going to administer them? The people who favor prohibition of a behavior are usually the last ones with the guts to hunt down and punish the people doing it. Don't send a patsy; get your hands dirty. Else spare me your righteous fury.
About the only reason I would concern myself with incestuous relationships between consenting adults is if I valued healthy familial relationships enough to want to intervene. I'd try to do a little more than stand on a soap box. Maybe I'd run for political office and make policy. Maybe I'd be a police officer. Maybe I'd be a lobbyist. Maybe I'd be a therapist. The point is, I wouldn't play a fucking game by arguing about it in the one place where it won't do anything to make a difference.
Peace.
About the only reason I would concern myself with incestuous relationships between consenting adults is if I valued healthy familial relationships enough to want to intervene. I'd try to do a little more than stand on a soap box. Maybe I'd run for political office and make policy. Maybe I'd be a police officer. Maybe I'd be a lobbyist. Maybe I'd be a therapist. The point is, I wouldn't play a fucking game by arguing about it in the one place where it won't do anything to make a difference.
Peace.