Singlehood Is on the Rise in the Rich World富裕国家掀起单身潮

For most of human history， coupling up1 was not merely a norm; it was a necessity. Before reliable contraception， women could not control their fertility， and most were far too poor to raise children alone. Hence the centuries-old convention that， whereas a tragic play or saga ends in death， a happy one ends in marriage2.

在人类历史的大半程里，结成伴侣不止是一种制度，更是出于必要。（剩余8942字）