In my life, there have been two, and only two, "official" resignations:
1) When I was at Bethel: resigned 'before my 4" because I couldn't tolerate the disillusionment and hypocrisy;
2) When I was a MS: resigned because I couldn't tolerate the abuse that we servants recieved at the hands of the CO (and other accumulated disappointments with the presiding overseer).
Otherwise, every "worldly" job I had, I stuck with it, in spite of my discomfort(s) with the job, or the bosses.
Perhaps it's a contrast of "this one pays your rent and puts food in your belly, and the other one doesn't."
Or, perhaps, there are deeper psychological factors at play?
Your thoughts and experiences?
Craig