If marriage is really for pro-creation, as some gay rights opponents suggest, why not require married couples to have children? An initiative filed by gay marriage advocates in Washington State would require heterosexual couples to have kids within three years or else have their marriage annulled. Under the initiative, marriage would be limited to men and women who are able to have children. Couples would be required to prove they can have children in order to get a marriage license, and if they did not have children within three years, their marriage would be subject to annulment. “For many years, social conservatives have claimed that marriage exists solely for the purpose of procreation ... The time has come for these conservatives to be dosed with their own medicine," said organizer Gregory Gadow in a printed statement. “If same-sex couples should be barred from marriage because they can not have children together, it follows that all couples who cannot or will not have children together should equally be barred from marriage." Supporters must gather at least 224,800 signatures by July 6 to put it on the November ballot.