These things are not unknown to you, nor unknown to you although evidently distant from you, is how bad a job can be for a person.
How valuable is a person's health? If a person is very miserable or depressed in a job -- from stress, from boredom, from being ostracized, from abuse, from a deep sense of not being "all you can be", that person is not sane. Not healthy. Sick.
When you switched jobs it may well be -- your responses seem to suggest it -- that you were looking for career advancement. You switched positions for career reasons. Not health reasons! Yes, let's talk about SANITY.
I asked questions -- which you refuse to answer, and yes, perhaps the answer is too personal. So? Generalize, give some reasoned answer, not a denial. Your answer was a denial.
Did you leave your prior positions in order to keep your sanity or in order to advance your career? Choose one! The answer that best fits, please.
What sort of crazy career do you have that a job threatens your sanity?
If a person’s only responsibility is himself and he wants to take a risk, go for it. For anyone who has family dependent on him, what you suggest is selfishness.
I left my previous job for career advancement. I never would have left my old job if I didn’t get hired at the new job. To do so would have been irresponsible at every level.