I've been seeing both sides of the debate when it comes to polygamy. The anti-gay marriage crowd asked a fair question - if the definition of marriage can change from one man/woman to man/man or woman/woman, on what grounds can polygamy be denied given it is involving consenting adults.

The pro gay-marriage crowd (playing damage control a bit) would dismiss the question or simply state polgamy is not in big demand. But either response was deflecting from the question.

Last night, after about four IPAs, I actually figured it out.

When marriage is denied to gays, it is denying a person something than another person has a legal right to.

But in making polygamy illegal, it is discriminating against everyone - including gays, straights, men and women. Therefore, in a skewed way, there is no one excluded from the anti-polygamy law because it is forbidden to all.