Who counts as single? There is more than one possible answer. Who counts as family if you are single and have no kids? What should we call adults who have no kids? Here are some discussions.
How should single be defined?
Chapter 1 of Singled Out
Meet a brilliant, fearless, and funny satirist of the marriage mystique (Jackie Geller discusses the definition of single)
What are some of the different categories of single people?
Single with no kids
Adults (single and married) with no kids