The Heterosexual Revolution
By STEPHANIE COONTZ
Olympia, Wash.

THE last week has been tough for opponents of same-sex marriage. First Canadian and then Spanish legislators voted to legalize the practice, prompting American social conservatives to renew their call for a constitutional amendment banning such marriages here. James Dobson of the evangelical group Focus on the Family has warned that without that ban, marriage as we have known it for 5,000 years will be overturned.

My research on marriage and family life seldom leads me to agree with Dr. Dobson, much less to accuse him of understatement. But in this case, Dr. Dobson's warnings come 30 years too late. Traditional marriage, with its 5,000-year history, has already been upended. Gays and lesbians, however, didn't spearhead that revolution: heterosexuals did.