Yes,
I have quit on the spot, in the middle of a long tirade, I was asked "do you never think?" I replied that I do think, and l walked away.
I have also been ready to quit on the spot, when I had a meeting with the MD and his narc of a production director, began feeding on me.
I was asking for funds for exploration drilling and a feasibility study, the parent company had already committed funds to a new plant, but there was no evidence that we had materials there to process, and the company needed to find a suitable mineral deposit and submit planning applications and environmental impact statements for a new quarry... The directors seemed to expected me to compile those with zero hard evidence and without even the benefit of a crystal ball.
I was expecting to have to hand the keys of my company car over, and go to a public pay phone (this was the mid 1990s - before everyone had mobile phones) to call my fiancée and ask her to make a 400 mile round trip to pick me up.
I ended up leaving that job at a time of my own choosing, to go back to college for a year.
I've just started doing seasonal work on local grouse shooting estates, I'm getting paid while I get physically fit in beautiful surroundings.
The difference that working and earning again makes to my self confidence and motivation is amazing.