It certainly is, M. I was able to retire early due to the death of my father. I claimed my inheritance and fled the profession, about the same time as you. I'd already developed high blood pressure and mild heart problems, which soon got better once out of the stress. My Refusenik colleague died in harness, and one or two others as well out of a staff of 20. (Large Middle School)
I sometimes wonder what and where I'd be now if I'd gone off to the Antipodes at the age of twenty two! I know I would have bitterly missed the UK. Do you think you'd leave if you had your time over?