@mobilian33 - I agree with you when you say that nurses are bound to get burned out in their jobs from time to time, and becoming a supervisor may help them get re-energized. There are also other ways nurses can change up their jobs and break the monotony.
I know a nurse who was getting tired of her job to the point she was considering quitting and starting a new profession. Then one of her supervisors told her about a traveling nursing jobs program.
The nurse became a traveling nurse. This worked out well for her because getting away from the same environment and the same coworkers and same buildings allowed her to remember why she became a nurse in the first place. She wanted to help people.