I fully expect to one day marry all of my adult sons. There is no requirement in Justice Kennedy Marriage (JKM) for sexual attraction or contact. Since I may share half my estate with my spouse without trifling with taxes for that portion, what better way to distribute an estate among family members than by marrying them. If my kids children are old enough, I’ll marry the grandchildren too.
By then, maybe NAMBLA will have helped to solve the age barrier. Maybe you can marry your unborn grandchildren. I wonder how that would affect abortion rights. Hmm, this could get complicated.