Islam endorses marriage to maintain one’s chastity, build a congenial relationship between a husband and wife, children, and relatives, keep the human race, and safeguard morality.

Reasons marriage is lawful

Allah has made marriage lawful for a number of good purposes, including: 

1. Maintaining one’s chastity. 
2. The establishment of a congenial relationship between man and wife that gives them both comfort and a settled home. 
3. Maintaining proper lineage between parents and offspring, and close relationships with relatives and in-laws.
4. The continuity of the human race, and the steady increase of the Muslim population so that they may advocate the divine faith. 
5. Safeguarding morality, so that people do not sink into adulterous relationships.