Pardon me for a moment. This is such an important and complicated point that it warrants the only footnote of this whole book. When sociologists say that "marriage is extremely good for children," what they really mean is that stability is extremely good for children. It has been categorically proven that children thrive in environments where they are not subjected to constant unsettling emotional changes--such as, for instance, an endless rotation of Mom's or Dad's new romantic partners cycling in and out of the home. Marriage tends to stabilize families and prevent such upheavals, but not necessarily. These days, for instance, a child born to an unmarried couple in Sweden (where legal marriage is increasingly passe, but where family bonds are quite solid) has a greater chance of living forever with the same parents than a child born to a married couple in America (where marriage is still revered but divorce runs rampant). Children need constancy and familiarity. Marriage encourages, but cannot guarantee, familial solidity. Unmarried couples and single parents and even grandparents can create calm and stable environments in which children can thrive, outside the bonds of legal matrimony. I just wanted to be very clear about that. Sorry for the interruption, and thanks.