I've heard it said in various circles that any supposition, regardless of plausibility, will be believed by at least 6% of the general population. That 6% is enough to generate hundreds of billions of dollars every year to line charlatans' pockets as they peddle their latest snake oil cure-all magic.
Magnets have no health benefits, astrology cannot predict a person's personality or future, chiropracty cannot treat asthma. "Alternative medicines" aren't an alternative to anything. Chi isn't anything but mystical nonsense; an eastern version of Uri Geller's spoon bending silliness. Unless any of these things can be reliably tested and reproduced in highly controlled conditions, they have no validity whatsoever, and in many cases are even dangerous.
Unfornately, people believe in these things, because they ARE mysterious. They are glamorous and flashy. They are the easy answers. They are the adult version of Santa Claus. Testing and verification isn't fun. It isn't glamorous. It's work. Critical thinking is work. It's more exciting to believe that the spoon is bent by the power of the mind, or that that guy really IS talking to the dead, or that there really IS a crashed alien spaceship at Area 51.
Many people are so blinded by the flashiness of nonsense that they can no longer see the awesome beauty of the real universe. Or perhaps it is simply too frightening to truly understand how utterly insignificant a human being is when compared against the grand and wondrous tapestry of the cosmos and are forced to retreat to more comforting thoughts.
There is enough wonder and majesty in the universe without imposing mysticism. In fact, mysticism dulls and dilutes the wonder. If you want to see something truly incredible and breathtaking, look a dew-covered spiderweb on a summer morning, or look at the deep-space wide-field Hubble photograph that captured dozens of galaxies in a part of the sky that would be covered by a grain of sand at arms length. That's REAL majesty. Who needs nonsense?