Here's what the Globe's Jeff Jacoby says:
Men and women are not interchangeable, and same-sex unions - no matter how devoted and enduring - cannot take the place of a married husband and wife. The essential function of marriage is to unite male and female. That is the only kind of union that can produce new life, and therefore the only kind of union in which society has a survival stake.
Of course many gay and lesbian relationships are stable, loving, and happy. But since they cannot do what marriage can - bind men and women to each other and to the children that their sexual behavior may produce - they have never been regarded in the same light as marriage. Somehow, that crucial distinction eluded a majority of the California Supreme Court. Happily, California voters will soon have the chance to make things right.
Discuss.