"In Japan, this new generation of sexless men—and the Japanese sex recession is caused by men’s lack of interest, to the vocal dismay of young Japanese women... — are known as soushoku danshi, literally 'grass-eating men' — in a word, herbivores."

"The epithet was originally coined by a frustrated female columnist but, incredibly, the herbivores aren’t offended and most of them are happy to identify as such.... And what seems to define the herbivores is not just that they have no interest in sex, it’s that they don’t seem to be interested in much of anything at all.... Not that they’re opting out of productive society to focus on, say, art, or activism, or some other form of creativity or counter-culture. Apparently, one of the few hobbies that seem to be popular among herbivores is . . . going on walks. To be fair, walking is an important part of digestion for ruminants... Beyond sexuality, the herbivores seem strikingly like a generation of men suffering from hypofrontality, the neurological disease caused by porn addiction. It seems that their key problem is an inability to commit, whether to a career or a woman. Commitment requires abilities enabled by the prefrontal cortex, like self-mastery, correctly weighing risk and reward, and projecting oneself into the future.... [I]t’s impossible to prove scientifically that the herbivore phenomenon is caused by widespread porn addiction. But one thing is certainly very suggestive: there’s no explanation for why, if the herbivore trend is caused by some broader cultural or socioeconomic trends, it should be such an overwhelmingly male phenomenon.... Is Japan a harbinger of the future? Are we on the road to becoming a herbivore civilization?"

From "A Science-Based Case for Ending the Porn Epidemic/We know what porn does to the brain, because the medical science is solid. Because social science is much softer, we can’t know for certain what causal impacts porn has on society, if any. But once we realize that we have to be much more humble in this area, we can still make prudential judgments" (American Greatness).