Shouldn’t marriage contract have expiration date? You know what? Why not let the couple (or whatever number of people that want that) to decide? Say 1 day, or 1 month, or 1 hour. Ups, it’s illegal because that’s effectively prostitution.
Marriage is a death horse now. It’s restrictions outside marriage that is the problem. Say a girl, as many girls, are attracted to Justin Bieber. Say the attraction is mutual because males are promiscuous assholes that want to grab many women. Would society let it?