It is irrational to swear that you'll love someone for the rest of your life, because anybody should be able to look at the odds and realise that they could very well be entering an oath they cannot keep.
That said, many people are happily married and continue to be happily married their whole lives. There's a bonding effect that can occur when you're with someone (or forced away from someone) that's really powerful.
Finally, as lifespans and independence creep up, we can expect people to no longer need each other as much. And sometimes familiarity can breed boredom or contempt.
It would be rational for people to realise that someday, they'll not think that their oath is actually binding any longer. As well, the harm inflicted upon divorcing someone can go down, if you're careful and gentle when filing for divorce. (too many divorces are hostile, and so we should work on the mindset that they should be amicable)
That said, many people are happily married and continue to be happily married their whole lives. There's a bonding effect that can occur when you're with someone (or forced away from someone) that's really powerful.
Finally, as lifespans and independence creep up, we can expect people to no longer need each other as much. And sometimes familiarity can breed boredom or contempt.
It would be rational for people to realise that someday, they'll not think that their oath is actually binding any longer. As well, the harm inflicted upon divorcing someone can go down, if you're careful and gentle when filing for divorce. (too many divorces are hostile, and so we should work on the mindset that they should be amicable)