Though Islam permits plural marriages by a man subject to certain conditions, men in Iran do not take in general more than one wife. Monogamy is respected and expected by the society. If a man has to take a second wife for certain reasons, the consent of the first wife is compulsory and no excuses are heard. Violation may take the erring husband to the family court and he is all likely to be punished. Small size family norm is practised.
People are conscious of better future for their children.
For some reasons, temporary marriage is permitted. This is called the Muta system of marriage. However, this is rarely done. This impressive social life of the people of Iran and a progressive and liberal Government took the participants by surprise. The long bearded rulers, the participants thought, would be extremely conservative.