The New York Times has an article explaining the declining demographics of Japan:
In Japan, birthrates are now so low and life expectancy so great that the nation will soon have a demographic profile that matches that of the American retirement community of Palm Springs. “Gradually but relentlessly,” the demographer Nick Eberstadt writes in the latest issue of The Wilson Quarterly, “Japan is evolving into a type of society whose contours and workings have only been contemplated in science fiction.”
Eberstadt has spent years writing about the challenges posed by declining fertility around the globe. But Japan, he notes, is a unique case. The Japanese birthrate hovers around just 1.3 children per woman, far below the level required to maintain a stable population. Thanks to increasing life expectancy, by 2040 “there could almost be one centenarian on hand to welcome each Japanese newborn.” Over the same period, the overall Japanese population is likely to decline by 20 percent, with grim consequences for an already-stagnant economy and an already-strained safety net.
Japan is facing such swift demographic collapse, Eberstadt’s essay suggests, because its culture combines liberalism and traditionalism in particularly disastrous ways. On the one hand, the old sexual culture, oriented around arranged marriage and family obligation, has largely collapsed. Japan is one of the world’s least religious nations, the marriage rate has plunged and the divorce rate is higher than in Northern Europe.
Yet the traditional stigma around out-of-wedlock childbearing endures, which means that unmarried Japanese are more likely to embrace “voluntary childlessness” than the unwed parenting that’s becoming an American norm. And the traditional Japanese suspicion of immigration (another possible source for demographic vitality) has endured into the 21st century as well. Eberstadt notes that “in 2009 Japan naturalized barely a third as many new citizens as Switzerland, a country with a population only 6 percent the size of Japan’s and a reputation of its own for standoffishness.”
These trends are forging a society that sometimes evokes the infertile Britain in James’s dystopia. Japan has one of the highest suicide rates in the developed world, and there were rashes of Internet-enabled group suicides in the last decade. Rental “relatives” are available for sparsely attended wedding parties; so-called “babyloids” — furry dolls that mimic infant sounds — are being developed for lonely seniors; and Japanese researchers are at the forefront of efforts to build robots that resemble human babies. The younger generation includes millions of so-called “parasite singles” who still live with (and off) their parents, and perhaps hundreds of thousands of the “hikikomori” — “young adults,” Eberstadt writes, “who shut themselves off almost entirely by retreating into a friendless life of video games, the Internet and manga (comics) in their parents’ home.”