AR, you have taken a decision only you can take.
To some of the disillusioned:
Are you really telling me the job has turned sour because someone at security might ask you to take of your shoes?
Are you really telling me you needed a degree 20 years ago to become a pilot?
Are you really telling me that 20 years ago you had no idea that you might get bored by repeating the same task over and over again?
This thread has MIDLIFE CRISIS written all over it!