Is nursing theory important to the nursing profession?

Assignment:
Is nursing theory important to the nursing profession? In particular, is it important for nurse practitioners? Does theory inform nurse practitioner practice? If you believe that it is important, explain why it is useful.If you do not believe that it is useful, explain why nursing theory is not necessary to the profession?
Requirements:
The student provides support from a minimum of one scholarly in-text citation with a matching reference
Donaldson, S. K., & Crowley, D. M. (1978). The discipline of nursing. Nursing Outlook, 26(2), 113- 120.
Iskandarani, L. S., Al Hammadi, A. M., & Al Gizani, R. A. (2012). Importance of nursing theories as a basis for practice. Journal of King Abdulaziz University Medical Sciences, 19(1), 115-123.
https://doi.org/10.4197/Med.19‑1S.8
McCarthy, V. L. (2016). GPS for nursing research & practice. Journal of Theory Construction & Testing, 10(1), 4.