Hello all!
I just want to comment on some points.
Not everyone will be happy with flying. Not everyone will be happy to be a lawyer or a cook or an engineer or a manager or a plumber. Accordingly, those who left piloting could be those who simply found that flying isn't their cup of tea. They have every right not be satisfied in it and leave it when they wish (assuming they can), but I kindly ask them not to blame the job for that, it negatively affects us pilot wannabes.
Also, why do you always compare flying to jobs you lable "professions"? What's wrong with a bus drivers or plumbers or waiters. They are humans like you and me and there is nothing wrong with these jobs (lets not forget that some of us were/are in these jobs at some point of our lives). Every person works and earns a living and we should show some respect for that whether it is a plumber or pilot.
cheers
guybrush