I was in banking and actually BECAME a hospital nurse about 4 years ago, after 3 more years of expensive schooling.
Yikes, right?!
Currently a traveler. There are certainly days where I long for time behind a desk and wooing clients at happy hour. At least as a nurse, I get to be honest and sometimes actually help people.
I see the burnout factor though, it's actually what brought me into the fold here. I realized my plan of finding a second career that would simultaneously let me be honest, helpful, save some lives, earn a living wage, and bring fulfillment until the day I die would likely fail. I'm still OK with nursing, but my years are numbered, for full-time at least. Trying to save lives while dealing with unrealistic management expectations, horrible hours, minimal sleep between shifts, etc. It ain't for someone who no longer finds the joy. Since becoming a traveler I have found management pretty much ignores you, which has probably increased my longevity by quite a bit.
Others are right, there are plenty of slower, less stressful things for an RN to do. I think if my FIRE plans get delayed, I'd do urgent care or clinic work. Maybe something fun, like work on a cruise ship. You could always get a desk job, personally It'd drive me insane.