If we destroy the fungal and the yeast forms of candida, we only create another imbalance in the body. Nystatin is not without its problems, even though it tends to be one of the safer anti-fungal drugs around. It's only known for functioning within the intestinal tract, so systemic fungal problems will still persist.
Microbes should be viewed as a part of the body, not a disposable entity. Attacking microbes is attacking the body.