In my personal experience, (2 divorces) I can only tell you that 2 people begin a journey and start on the same path, once they let others into their 2 person circle (in-laws, friends, co-workers, strangers, etc.) by telling them about their situation like finances, sex life, fights, etc. it opens the door for other's to judge their decision of the person they married. Instead of looking to eachother to solve their problem, they look elsewhere and don't forsake all others which snowballs and someone leaves the other at the advise of one of their confidants. I think in other parts of the world, a married couple depend on eachother and there may not be anyone else who dare cross that sacrid bond of marraige. They carry on that tradition. It's like coming from a family of divorce here in America, everyone knows it can be done so we make a hasty choice of a partner, and when we finally get to know them, it's really never too late to bail out, why? because our parents did. There's always a way out and that seems to be our culture. The grass is always greener culture.