A family in Islam is not only a place for reproduction but also a site for growing the healthy spirit and character of human beings. To clarify this point, some principles are mentioned below which are derived from the verses of the Quran:

1. Having amity and mercy within the family and providing security and peace for each other. This verse refers to family and its spiritual relations: “And of His signs is that He created for you mates from your own selves that you may take comfort in them, and He ordained affection and mercy between you. There are indeed signs in that for a people who reflect” (30:21).

2. Consultation and satisfaction of the couple in decision making [1].

3. In verse 71 of Al-Tawbah, men and women are introduced as each other’s friends and helpmates. In these verses, the importance of consultation is notified, and it is also mentioned that the viewpoints of all the family members are of equal value and no one’s approach receives more importance than the other’s [2].

4. The importance of family interests over personal interests [3].

5. Improving affairs and seeking reconciliation [4].

6. Forgiving each other’s mistakes, establishing peace and amour, and avoiding egocentricity: “If a woman fears from her husband misconduct or desertion, there is no sin upon the couple if they reach a reconciliation between themselves; and reconcilement is better. The souls are prone to greed; but if you are virtuous and God wary, Allah is indeed well aware of what you do” (4:128).

7. Being good-tempered in etiquette and commerce: “deal kindly with them” (4:19).

The principles mentioned above indicate that the style Islam suggests for families is achievable through a true collaboration of all family members. Every family is a small part whose rectification contributes to the improvement of the whole society and consequently its perfection.

References:

1. (2:233)
2. (9:71, 28:26, 28, and 37:102,103)
3. (2:229, 4:19)
4. (8:1)

As a precursor to any explanation on this issue, we must first have a very clear understanding of the concept of marriage in Islam and most people in the world and find out why this question has arisen.

According to the Quran: "It is He [God] who created you from a single soul, and made from it its mate, that he might find comfort with her" (7:189)

Obviously, there are other requirements for a person to fulfill when they decide to get married but Quran names comfort before anything else; that is most probably because the fulfillment of all the other needs also leads to the ease of mind and inner peace.

More interestingly, however, it is not only the holy Quran that says getting married is for the purpose of comfort; having a quick search on the internet makes you realize how all people around the world marry mostly for this emotional purpose, as well:

“…there is an important but neglected positive aspect that explains why people voluntarily enter into commitments like marriage: it is a way of expressing your love and devotion to another person. Not the only way, of course, but a well-established and particularly declarative way…” [1].

Monogamy is the best form of Marriage in Islam

To fulfill this emotional need of a person, the only acceptable form of marriage which is agreed upon by almost all psychologists, and is also recommended by Islam is monogamy. It is within the monogamous type of marriage that all the equal rights of men and women are preserved.

The feelings of love, commitment, loyalty, security, trust, honor, and respect as well as many other benefits [2] can be fully achieved when one has only one spouse.

Why, then, Islam Permits Polygamy for Men?

The reason has been explained in a comprehensive article. Based on what is discussed there, nowhere in the Quran, you can find a verse that suggests or encourages polygamy among men to attain more pleasure or to satisfy their carnal desires; there are no positive or negative comments on this regular unlimited tradition of the Arab culture.

Instead, the holy Quran imposes restrictions upon it and introduces it as a remedy to a social problem, i.e., the excess number of women in need of marriage over marriageable men, like at the time of war, etc.

Why can’t women have multiple husbands and polyandry marriage?

Having discussed the concept of marriage in Islam and the limited law of polygamy which is introduced as an exception in case of special social needs, and nothing against the equality of men and women, do you still find the above question unanswered?

If yes, here are some reasons why polyandry is forbidden for women:

It destroys the family which is the foundation of a healthy society. It is usually NOT easy for a woman to perform her duties as a wife and a mother despite having several husbands.

It is against the nature of women and also inconsistent with men's innate desire for exclusivity and love for his wife and children [3].

It adversely affects women’s health, since women with multiple husbands are more prone to STDs.

It increases sterility among women which will result in population problems.

It may cause identification problems for the conceived child.

It may cause identification problems for the conceived child, which will ultimately lead to legal troubles.

These reasons may clearly show why polyandry is uncommon and frowned upon among Muslims and most people in the world. The Islamic point of view on this issue, however, can be summarized as: “Allah desires ease for you, and He does not desire hardship for you” (2:185), and Allah knows best what is good for you.

References:

1. get married
2. being monogamous
3. women's marriage