When the couple gets married, traditionally, they will buy a house and prepare for their future life. Nowadays, as more and more people have the strong sense of their property rights, so some couples start to make some property agreement before they get married. I think it is right to do that.
On the one hand, it is fair for the people who spend the big money, they won’t lost their own money after the marriage. Some people get married for the purpose of becoming rich. The property agreement will stop the money purpose, then people won’t marry for the money. People need to make money by their own work, not the marriage.
On the other hand, if the couple gets divorced, they won’t argue for the property. Today, the divorce rate is increasing, no couple can guarantee their marriage will always work, if they get divorced, the property agreement will help them to clear their property. So there will be less argument.
In my opinion, everyone needs to make money by their own, the property agreement before marriage will keep the marriage clear.