Switzerland wants to de-criminalize adult, consensual incest.  What do you think of this move?  Do you think incest should be de-criminalized?  All of it, or just certain forms (e.g. de-criminalizing incest between siblings, but keeping father-daughter incest illegal)?  

For Christian readers of this blog who may disagree with it, I would like to know how you reconcile your opposition to incest with examples of incest in the Old Testament.