Almost everyone believes in something that there is no proof for. In the absence of any proof, odds are it is all made up.
But in spite of that people still believe. Very Strongly. In things spiritual and weird.
Here is some common beliefs someone would win a Nobel Prize for if they proved it:
The Existence of God or Gods
Manifesting a belief also known as Magical Thinking (For instance, your own wealth or plane crash. Coincidentally, I started to write this on a plane and we couldn’t land correctly a few minutes later)
Aliens in any form past or present. (For example, that Aliens visited Earth)
Astrology
Tarot Cards
Spirits, Energy, etc
Ghosts, Demons, Bad Energy, etc
Deja Vu
Telepathically knowing something is wrong with your loved one, child, parents, etc (A common story is they got in an accident and I just instantly had a bad feeling before I was told)