Both husband and wife are excellent. What will happen after marriage?

I don't really believe this. In ancient times, rich people liked this when they got married. Is it true that their marriage must be very happy? Those poor people's homes, those that they can't afford, are all destroyed? Because of love, if the eight characters don't match, will you be separated from the person you love? If the eight characters are harmonious, will you live with someone who is not interested in life?