重述文章标题：“孩子们都去哪了？”

"Where Have the Children Gone?" is a thought-provoking article that explores the declining number of children in developed countries and the potential consequences of this trend. The author argues that while many people believe that fewer children are a result of changing social values or economic factors, the real reason is much more complex. The author suggests that the decline in children can be attributed to a combination of factors, including increased stress, decreased access to healthcare, and changes in family structure. The author also notes that the decline in children could have significant implications for society as a whole, including an aging population and a lack of support for the elderly. Overall, the article highlights the need for further research into the causes of the decline in children and the potential solutions to this growing problem.