Why Marriage?, by George Chauncey, from Perseus Books Groups, ISBN 0465009573. Angry debate over gay marriage is sweeping the country, threatening to divide the nation like no other issue since the Vietnam War. Why has marriage suddenly emerged as the most explosive issue in the gay struggle for equality? At times it seems to have come out of nowhere - but in fact it has a history. Chauncey shows how the demand for the freedom to marry emerged from a decades-long struggle. He further illuminates what's at stake for both sides, making this an essential book for gay and straight readers alike.