Should marriage exist as an institution?

According to Chapter 1 of title 1 of the United States' Code, "the word 'marriage' means only a legal union between one man and one woman as husband and wife, and the word 'spouse' refers only to a person of the opposite sex who is a husband or a wife" (The Defense of Marriage Act). Marriage has long been an institution that was based on the love of two individuals and their future together. While procreation is also considered in the definition, there are no laws in our society stating that it is necessary, or even important. With the Defense of Marriage Act bill, the United States govern…