Daughter
In the United States, the birth rate is 105 sons to 100 daughters which has been the natural birth rate since the 18th century. About 80 percent of prospective adoptive parents from the US will choose a girl over a boy. In fertility clinics that enable sex preferences, daughters are usually preferred over sons. In the traditions of various Abrahamic religions, Luluwa is regarded as the first daughter to have ever existed.
Fear of children
While there are many families in the world, not all couples or even humans desire to have families or children. The United States Bureau of the Census conducted a study in 1971, which they say the data still seems to be the same today concerning birth rates and parent-to-child ratios. They believe it is too early to say that (increased rates of childless families) foretell a future increase of childless homes in general or just later birth. The number of married couples voluntarily choosing to be childless are only increasing. As social trends are hard to predict and therefore fertility expectations, attitudes, behaviors and such are uneasy to consistently gather data for, leaving voluntarily childlessness hard to track. There is a forum on the popular website, Reddit, where self-described childfree individuals from around the world discuss the childfree lifestyle.