From my viewpoint, there are two kinds of pilots!
The first group is those that fly because it's in their DNA. There must be a flying gene! Once discovered, flying is an integral part of who they are, just like eye color or gender. The flying gene cannot be removed, suppressed into dormancy, or replaced by any other gene. These pilot's will find a way to continue to fly no matter what the circumstances, the odds of success, or sometimes even their health. To fly is an overwhelming and compelling driving force in their lives. There may be formidable obstacles in their path, but these pilot's almost never fail to complete their training, one way or the other, sooner or later.
The second group is everyone else. They fly for any other reason than an overwhelming compulsion to be airborne. It is often an aquired taste, not one they were born with or particularly must enjoy. It includes those who fly for business, or because it's quicker than driving, or simply for the sense of accomplishment, or even as just another way to make a living (it beats driving a truck in bad weather on bad roads). They might even fly just because it seems "cool" to others. They don't have that burning desire to fly, and often have interests more important to their lifestyle, such as big slow boats or small fast cars. Their drop-out rate is understandably much higher.
Some are meant to fly, while some others just meant to fly!
