I just re-read this entire thread.
Not one person mentioned you having to quit your job
No, none of us took the time to construct a detailed pros and cons list for you, but so far the responses all lean toward switching to a different department where the environment will be more forgiving and night shifts will be less or preferably non-existent....
Basically it comes down to this:
Take a leap of faith that a new boss and different coworkers will equate a more forgiving environment as you make the intelligently healthy choice for yourself.
Orrr stay where you are now out of fear of the unknown or $$$$ and prepare to suck it up indefinitely.