Why Have Young People In Japan Stopped Having Sex?

Japan's under-40s appear to be losing interest in conventional relationships. Millions aren't even dating, and increasing numbers can't be bothered with sex. For their government, "celibacy syndrome" is part of a looming national catastrophe. Japan already has one of the world's lowest birth rates. As The Guardian reports, 45% of Japanese women aged 16-24 are "not interested in or despise sexual contact". More than a quarter of men feel the same way. Is Japan providing a glimpse of all our futures?