I have always assumed those who do it are most likely single, have a big interest in air travel and have plenty of time on their hands.
The immense diversity of the human race is not capable of being distilled so simply, dear HIDDY.
- Single? Married for the last 40.4 years.
- Interest in Air Travel? Aircraft are simply transportation, a means to an end.
- Plenty of time? Yes, time rich, having stopped working in 1993. However, not too much time left.
2/3 disagree!