I heard about the phenomena of "herbivore men" or soshoku danshi in Japan. These may be otaku who decide that sex and relationships are just too complicated. Or, more positively, they are the Satori Generation, who have "achieved the Buddhist enlightened state free from material desires".
I did not realise that this phenomena is also present in Hong Kong.
And in China, some men (and maybe women too?) have decided that in the face of unrelenting social and economic pressure to succeed, and the irrepressible rat race and work pressure, the best resistance, is to "lie flat" (tang ping).