Nurses don't want to be doctors. Advanced practice nurses could have chosen medical school if they wanted to become doctors. Instead, they chose to expand their study of nursing through advanced practice programs such as anesthesia, nurse practitioners, or the rapidly expanding doctorate in nursing practice.
Choosing further study in the nursing profession is a commitment to the nursing model, which emphasizes holistic patient care. Nurses approach their profession in a very different manner than physicians approach theirs and both are valuable and necessary to the overall provision of care in this country. Indeed, given the physician shortage, particularly in rural areas, the only way to meet the country's needs for primary care is through advanced practice nurses.
So advanced practice nurses are necessary, vital, and supported by the public. Study after study has shown equal, or in some cases better, outcomes in patient care from advanced practice nurses. A study in the northwest last year revealed patients found nurse practitioner care just as good as physician care and the nurse practitioners were rated higher for listening, bedside manner, and spending time with patients.
Advanced practice nurses must be celebrated for their quality of care and for the ways they approach providing care. But calling them 'doctor' can take away from that perspective. I'm not a big fan of titles and don't see why using doctor is a benefit.