Should gay couples be able to marry?

I believe Same-sex marriage should be allowed. To many people being gay they feel that their is a discrimination against them. I think if their freedom in speech and religion it should be just as much to who they marry. I don't think by couples marrying with the same-sex can harm anyone. Other believe that its not right because of religious terms yet i think if it makes them happy its okay with me. Its about the love they have between one another and not being the same-sex. I think its not fair because its like saying that someone who has a Hispanic background cant marry someone who is African American, this is a very controversial topic because many people believe different, yet its becoming more common because in certain states its allowed to marry. I think it should just be allowed in every state.