Why are people so upset when gay marriage are compared to interracial marriage?

Look people need to realize that interacial marriages and gay marriages are not a big deal. Why should they not be as miserable as any other couple. i mean **** you go do what you want f***. i personally dont give a **** who you marry and what you are. do what you want and dont let people say some **** but god said it isnt right. i could have sworn taht thie is something in the bible and in the constitution that says do anything in pursuit of happiness.