The problem of understanding that makes people so wary of witchcraft is that they are accurately assessing the dangerous forces we work with whenever we do our rituals, incantations, and spells. Unfortunately, they mistakenly perceive the danger to lie within those rituals, incantations and spells, rather than within the very forces of nature we use them to call upon.
If you've ever practiced "positive thinking" only to find the very blessings you instilled so much of your hope and imagination in manifest before you, you've practiced magick. Magick is the use of correspondences and objects imbued with certain energies to channel your intentions into the universe. The only way the universe can give you what you want is if it knows what you want, right?