Allegedly, opposition to same-sex civil marriage is largely due to religious bigotry against couples of homosexual behavior.

Allegedly, opposing same-sex marriage is unconstitutional because Federal Judge Tauro, and President Obama through his administration's Department of Justice has declared the Defense of Marriage Act (DOMA), Section 3 to be unconstitutional, and will not defend it (though it will enforce it [sometimes]).

Allegedly, approving same-sex civil marriage will not "hurt" opposite-sex marriages. (This argument is usually posed as a question, without explaining what is meant by "hurt".)

Allegedly, opponents of same-sex civil marriage are bigots because they exclude same-sex couples from the institution of marriage, and all the benefits that such an institution affords to married couples.

Allegedly, Nationwide polls show that most US Americans agree to include same-sex couples into their State or Federal definition of marriage.

Allegedly, US Constitutional Amendments give each person the right to marriage equality.

Allegedly, The Supreme Court has on several instances recognized that everyone has a right to marry the person of their choice.