Nowadays, they say, the Japanese have mostly stopped having Sex...

It's one of those phenomena that gets worse--more problematical--as you dig into it:  It's the young people, the very ones who should be working hardest to replenish the race, who seem most disaffected by the whole business of getting married and having babies, and who, in a savourous Japanese phrase that I can't just now remember, say that procreation is just "too bothersome." And it's a growing trend: Each successive generation is less and less interested in having sex and making babies--quite like the rising tide of atheism among the young adults of the West.  And it's not as if the Japanese are ever going to adopt the sluttish Occidental casual insouciance of having children out of wedlock. They'll just go on, living with their parents, masturbating to their stylized but perfectly adequate pornography, playing games and having hobbies.  And in a thousand years they'll be extinct.  Good for them.