Witchcraft - yes, as a pagan religion - why? Because I've been told by its practitioners that's what it is, and have no reason not to believe them - it's their religion, not mine.
Magic - yes, as talented trickery - why? Because I've been told by its practitioners that's what it is, and have no reason not to believe them - it's their talent, not mine.
Anything supernatural about either - nope. Why? Because I believe there's only one supernatural force in the universe.
Now, had you asked about alchemy and astrology, on the other hand ...
(kidding!)
These things require belief in things supernatural, that is something beyond nature and science. While not everything is explained by science that doesn't mean it never will be. I prefer "I don't know" to subscribing to the supernatural.