The DOMA campaign

Everyone in the world deserves to be happy with the person they love. If this is a free country, why can't homosexual people get married? Don't get me wrong, I kinda don't support gay marriage and i kinda do. I do have gay friends, but two people of the same sex is against my religion. I really don't know what to say about it because of my religion because it is wrong, but if the people are happy then why stop them??