Gay people are arbitrarily denied the same marriage benefits that are given to straight people by our government.
My sister and her partner are married, but that marriage is not legally recognized by the federal government. They cannot claim "married" on their Federal tax returns. They cannot draw benefits from Social Security in the same way as a hetero couple, even though they pay the same amount into the system. In effect, our government is charging them with a "uterus tax" because there are two uterii in the marriage instead of one.
You are free to recognize or not recognize the legitimacy of their marriage as your religion or conscience dictates. You should not be free...to have your government deny them the same benefits that you are eligible for as a heterosexual. Call it a marriage, call it a civil union, call it a sin, call it whatever the hell you want. They dont care. They just want the same rights that yoiu and I have.