I can see both sides of this, but think it is tough to justify in many marriages. I would be really upset if my wife was getting boned by some other dude, in no small part because I don't want to be dealing with sloppy seconds and possible disease. Really this makes me shudder to think about. I make no moral judgment over what others decide is okay, but I don't want to deal with affairs in my marriage. I think it is very difficult to make polygamous marriages work out for everyone involved. A lot of chance for hurt feelings and STDs. I know I would deeply regret boning some other chick, even if times can be hard in marriage.