Well I believe that supernatural phenomena are explained by human will (mental power if you prefer) altering reality a bit; the more minds joined in the same belief, the more likely the expected phenomenon becomes; people would then be affected if they tuned into a specific "belief vibe".
That would be the only way to consistently explain phenomena over the world contradicting one another - and even then such thesis would have many many flaws left unexplained.
I for one don't have any fear, don't spend any cents, don't give any extra respect and honestly don't care, about "magic" or people claiming to be involved with it. The day a science lab announces it witnessed something supernatural, testing it in every way possible with no sensible explanation, then I'll start worrying.
Bear in mind there is the PLACEBO effect, cold reading, cunning visual trickery, statistical oddities / coincidence, shiny swamp gas, the human shifty memory (yes, that clear memory you can swear is real can be altered or made up by your brain without you being able to tell, and THIS has been tested), hallucination, plain lies that even the teller ends up believing, et cetera, et cetera, damn endless et ceteras.
Oh please, if you have seen something extraordinaire yourself, doubt yourself, doubt your senses, doubt the surroundings and the people around FIRST. Don't let the ordinary quality of your life throw you eagerly into supernatural belief. It's ok to live in a non-magical world, there can still be beauty and amazement. Welcome.
If you have only "heard of" from a person you trust very very much, don't even bother.