Because the post-war generation has started to have children while both parents have continued to work outside of the home, higher incomes combined with smaller families have given parents greater capacity to spend money on each child, and hence the market for baby products--of which disposable diapers are just one example--has developed.
由於戰後新生代開始結婚生子，年輕的父母又都外出工作，家庭收入提高，子女數的減少，使得家長們有能力花更多金錢在子女身上，嬰幼兒用品因此得以發展，紙尿布即為一例。