Magic isn’t black and white or light and dark.  In fact, I get irritated when practitioners grandstand about the merits of being aligned exclusively with either side of the craft.  Part of the wisdom of working with the gods and nature is that nothing is clear-cut and life is too complex to be confined in a restrictive mentality.  That being said, there is such a thing as ethical and unethical witchcraft.  Yeah, yeah, I know.  Ethics implies that there is a right and a wrong way to approach a situation, and as we established dichotomies suck.  But most ethical traditions and systems of personal ethics embrace the grey areas and nuances to every situation.  So ethics isn’t a dichotomy so much as a multi-layered approach to acting and reacting.