Islam, unlike other religions is a strong advocate of marriage. There is no place for celibacy like, for example the Roman Catholic priests and nuns. The prophet (peace be upon him) has said :
"There is no celibacy in Islam.Marriage is a religious duty and is consequently a moral safeguard as well as a social necessity. Islam does not equal celibacy with high "taqwa/Iman". The prophet has also said, "Marriage is my tradition who so ever keeps away there from is not from amongst me."
[Narrated by Ibn-e-Majah]
"Marriage acts as an outlet for sexual needs and regulate it so one does not become a slave to his/ her desires.It is a social necessity because through marriage, families are established and the family is the fundamental unit of our society. Furthermore, marriage is the only legitimate or halal way to indulge in intimacy between a man and a woman.Islam takes a middle of the road position to sexual relations , it neither condemns it like certain religions, nor does it allow it freely. Islam urges us to control and regulate our desires, whatever they may be so that we remain dignified and not become like animals. The Qur'an has described this relationship between men and women, which brings love, harmony, trust and compassion, in the most moving and eloquent terms"
Among His signs is [the fact] that He has created spouses for you among yourselves so that you may dwell in tranquility with them, and He has planted love and mercy between you; In that are signs for people who reflect.
They are a garment for you and you are a garment to them
And the believers, men and women, are protecting friends of one another; they enjoin the right and forbid the wrong, and they establish worship and they pay the poor-due, and they obey Allah and His messenger; as for those, Allah will have mercy on them; Lo! Allah is Mighty, Wise. Allah hath promised to believers men and women gardens under which rivers flow, to dwell therein, and beautiful mansions in gardens of everlasting bliss; but the greatest bliss is the good pleasure of Allah: This is the supreme felicity.
"The word "zawj" is used in the Qur'an to mean a pair or a mate. In general it usage refers to marriage. The general purpose of marriage is that the sexes can provide company to one another, love to one another, procreate children and live in peace and tranquility to the commandments of Allah.
Through Marriage, the conjugal relationship between a man and a woman becomes lawful. It provides a legitimate outlet for recreation as well as procreation. Islam regards sex as natural and good, but restricts it to the partners of marriage so as to ensure the responsibility for its consequences.
Marriage provides spiritual, physical, emotional and psychological companionship. This companionship generates and sustains love, kindness, compassion, mutual confidence, solace and succor (sakinah). It lays a spiritual and legal foundation for raising a family. The children born of the matrimonial union become legitimate and mutual rights of inheritance are established."