Reproduction is a fundamental role of marriage. But production is also important. In every traditional society, men and women specialize in different economic tasks. By marrying, you double the number of relatives.
Marriage is thus a relationship between families, as well as individuals.
As seen in many societies, the familial aspect of marriage is more important, and parents will arrange their children s marriage. Most of you readers probably believe, on some level or another, that monogamy is right and polygamy is wrong. There is nothing wrong with such a belief. But those who wish to argue in favor of heterosexual monogamy as the only form of marriage cannot simply say that it is more natural or normal. Marriage patterns vary with economic and social structure of a community.