On Nov. 6, Minnesota voters will decide whether marriage will be protected in our state Constitution as the union of one man and one woman. Opponents' reason for fundamentally redefining our bedrock social institution appears on yard signs that dot the metro area: "Don't limit the freedom to marry."
Now, Minnesotans are nice folks, and we don't like to think of ourselves as needlessly limiting another's freedom. The truth is, however, we "limit" marriage in a variety of ways. You can't marry your sister or your father. You can't marry a 12-year-old, or two people, or someone who's already married to someone else.
Why do we "limit" the freedom to marry this way? Is it because we harbor a dislike for sisters or 12-year-olds, or for folks who wish to express their love and commitment in groups of three?
Of course not. All social institutions have boundaries, or defining characteristics, that are integrally related to the function they perform. The vital role of marriage -- in all times and places--has been to link men to women and the children produced by their sexual union, in order to create the optimal environment for rearing the next generation.
It's misleading, then, to frame the debate over one-man/one-woman marriage in terms of "limiting" the "freedom" to marry of people in configurations that aren't consistent with the institution's mission. It's like claiming that the color blue is somehow "limited" because it's not the color purple.
The human race's two sexes -- male and female -- have much in common, but they also differ in fundamental ways. In the bearing and rearing of children, men and women complement one another physically, socially and emotionally. Women give birth to babies, and men beget them. Mothers tend to nurture, while fathers tend to encourage risk-taking. Boys and girls need -- and deserve -- both a father and a mother to model how to live.
Same-sex-marriage supporters deny the bedrock biological truth of human sexual complementarity. Society should be wholly indifferent as to whether a child has a mother and a father, they say. Any two (or three?) people will do.
The idea that men and women are interchangeable -- fungible -- is the unspoken axiom on which the argument for same-sex marriage is based. This idea has profound implications for the way we view the world, the family and human relationships. If same-sex marriage becomes law, all Americans will be required to adopt or conform to this view.