The soshoku danshi (herbivore men or grass eaters) are humanity's best hope for saving the planet. They hold the key to halting population growth. In Japan men have been walking away from from marriage and children.
To learn more about this welcomed development see this Wikipedia entry.
See also the Facebook page Soshoku Kei Fans
Such men are able to live more simply. They do not need to work so hard. This has a most positive effect on the environment. Japan's economy is not growing. A growing economy is a threat to the environment.
Japan's population looks certain to decrease in the decades ahead. This is exactly what is needed in all countries around the world