The simple dream of fame may be the explanation for many, but for others the quest is genuine, the broadcasters' content directors say. They really do welcome the opportunity to win some money, acquire some equity in a house, meet the love of their life. And with so many answering the invitation, there must be plenty of genuine applicants for the programme directors to select.
Television is no place for fakes, it projects facial and body language so well that viewers could instantly tell if somebody was acting. Or if a line was scripted. Reality TV succeeds because it is real. It offers studies of authentic human nature no matter how contrived and unrealistic the situations may be.
So we owe some appreciation to those willing to live in front of a lens for our observation, dissection and discussion. No matter how willing they were to be exposed, they probably do not realise what exposure on television really means until the programme starts screening and perfect strangers hail them by name and talk to them like familiar friends.
And sometimes the reality stars really do find what they hoped. Art Green and Matilda Rice, winners of The Bachelor NZ in season one, got engaged last month.
When we report the numbers who apply for these shows it is clear that everyone selected for them is a winner. They have usually undergone a rigorous examination of their personality, aptitude and ability to ignore a camera in their face. It cannot be easy, it cannot always be fun, but it is damned fascinating.