A world where superstition is real, a world where magic is natural, a world where ghosts and demons exist, a world where alternative medicine works better than real medicine-
that world is a LESS interesting world.
The real world has rules that impose constraints on what is possible, so when something amazing happens, it happens in spite of those constraints.
If anything was possible, nothing would be awesome, and that would make the world very boring.
An ordinary garden is wondrous; imagining that mystical fairies live in it would be gilding the lily.