Congratulations on making the decision to become an RN, inspite of already having a degree. I think your question is a good one but I do not think there is a black or white answer. I am currently in my master's program for Psych...I started out as a critical care nurse. Before that people told me I had to have med/surg experience. Looking back it sure would have helped...but I did just fine. I also compare your question to this: Do you really need a BSN to be a better RN? For many nurses the answer is no, for me the answer was yes. The sociology, anthropology, psychology....I am certain played a role in my decision making processes as a nurse, for the better. I was more informed. Knowledge is power!!!!! Is nursing an art or science??? You will get every answer under the sun. It's a personal decision you need to make. I don't think you have to do it...do I think you will benefit from the experience, ABSOLUTELY!!!! In short, good luck. There is no right or wrong decision just keep on nursing.