I agree you shouldn't have to give up a job that you enjoy just to show your discontent as unless there are big numbers involved no-one will bat an eye lid at 1 or 2 people leaving before their 22 year point. This won't bring the system down! Lets be realistice about leaving, its not to show or to prove to anyone what you think as this is not only worthless but also pointless.
You've got to be doing it for your
own reasons forget the good of the service, whether you are leaving because of financial or family reasons get the most out of the services and bother yourself to get a licence at the earliest opportuniuty so you
can leave if someone decides to change your terms and conditions without dicussing it