Marriage is like a besieged castle - those on the outside want to get in, and those on the inside want to get out. Marriage is love. Love is blind. Marriage is an institution. Therefore marriage is an institution for the blind.
Marriage certificate is just another name for a work permit.
Marriage is not just having a wife but also worries inherited forever. There was this man who muttered a few mords in the church and found himself married. A year later he muttered something in his sleep and found himself divorced. There was this lover who told his love that he would go through hell for her.