Should gay people be allowed to marry?

For thousands of years, most cultures around the world have recognized marriage as a union between men and women. In the majority of modern nations, including the United States, same-sex couples cannot be legally married. Several gay couples unsuccessfully filed lawsuits in the latter half of the twentieth century against various states for not allowing them to marry. However, same-sex marriage were never considered possible in the United States until three same-sex couples challenged Hawaii’s marriage law on the grounds that it discriminated against them based on their sex. Should gay people be allowed to marry?
American is known as a sign of freedom all over the world. That is because the basis of American ideal of human rights is the concept of not denying people their rights unless you can show a compelling reason. According to the U.S. federal law, “Marriage is an institution between one man and one woman.” Is this just like a kind of discrimination? Marriage dep...