This a questions for any Registered Nurses!?

If I were you, I'd forget about any career in the health professions, because you will encounter blood and you will encounter shots. You will encounter people throwing up all over the place and you will encounter people crapping in their pants and in their beds and you'll have to clean it up on occasion. Nobody can predict whether you'd be able to steel yourself and persevere in the face of repeated instances of such things, but having over forty years experience, I'd say you sound like one of those who should go into botany.