I was the one who talked about Japanese people just not wanting to get married, and SigmundFraude's suggestion was that it's principally the men. Maybe that's true, but here's a quote from the Wikipedia article about "Marriage in Japan":
Young women are instead indulging in a lifestyle centred on friends, work, and spending disposable income; unmarried Japanese adults typically live with their parents, and thus save on household expenses, and increasing the amount of money available to spend on their own entertainment. Sociologist Masahiro Yamada gave these young adults the label "parasitic singles". Some young women reacted by creating business cards with their names and the title "Parasite Single" on them. Japanese media has given heavy coverage to the decline in Japan's birthrate, but the trend continues.
And the same search came up with this, where there's a poor young woman who's seeing difficulties whatever she does (and most likely, she's unfortunately right):
www.monad.com/sdg/Journal/kiyomi.html
She says "I saw the reality that women who were around 24 years old quit their jobs one after another because of marriage...When I was a kid, I was disappointed with the idea of marriage, and decided to become a working woman. However, as I grew up, I couldn't help accepting that marriage is an important issue. That was a shock for me. Now, I'll be 25 years old soon, so it'll be getting difficult to rely on marriage to get the stable status. Even now when I talk to my father in Japan on the phone, he says that English isn't important in Japan, so quit studying and come back to marry. That also gives me stress because I know he is right, but I don't want to do it. Therefore, I just believe in myself and make an effort although I don't have much confidence about my future."