I am with you. The other day, I sent out 4 applications for jobs that I held prior to being a nurse. The problem is companies see that RN and think you'll leave because the money isn't the same. I'm in school right now, hoping that it will help move me away from the bedside. But I fear with the oversaturation of NPs, that's not going to happen either.
If your love of nursing is gone and you're convinced that it's not coming back, I'd say move on. But not before looking at your bills and retirement and seeing what financial position you're in. If you can tolerate teaching more, then try to make that a more permanent job.
I'm not married, so I bounce these issues off my parents. My father was the one who worked shift work, and he firmly believes that 12 hour shifts are the devil . He argues that 12s take away any chance of recuperating for the next day.
All I want is a normal life, and it sort of sounds like you do too, however you define normal. Is it possible to go part time? Maybe one less day will give you more of a chance to live life the way you want.