When you were younger, what is one thing you thought existed but it actually doesn’t?

Money making machines in everyones house

In the family car during night drives I would watch for the moon. I thought that my family was special and the moon was following us. ( I was maybe 4 or 5 yrs old at the time ) jokingly, my parents didn't correct me on this and actually encouraged my belief of moon people.

As Hippy alluded to, there is a money tree in the backyard. Oh, my I heard that so much I really thought there was a tree out there.  :(

I remember, when very young, hearing a news report about somebody who would die unless certain expensive drugs were provided. I couldn't believe that a pharmaceutical company would not supply those drugs freely to save his life.

That had other connotations, of course but i came to realise that, except for the person concerned and their family, life isn't necessarily valued very highly,.

Santa The Easter Bunny.

My ex best friends loyalty and love..... Pfffft!

The Jackalope.

Father Christmas

Monsters under the bed

Ghosts.

Ghosts

Vampires

Leprechauns

Fairies

Elves

Santa Claus

Easter Bunny

Tooth Fairy

Bigfoot (or Sasquatch, or Wendigo)

Demons

Gods/God (and their Antithesis)

My brother had told me a story when I was a child of the world's shortest man. He was the size of a can and played the blues. Even my parents went along with it. It wasn't until I was 12, when we were in a museum. There was a life-size picture of the world's shortest man next to the world's tallest man. I can never become a lawyer now.

The tooth fairy. I thought it was real till one night I caught my mom trying to get the tooth under my pillow. She said she was helping the fairy and I shouldn't tell my younger cousin who was spending the night. I did get 5 bucks for it  :)

Why, Santa, of course. I even believed I saw him in the sky.

Justice

I fervently believed in the man in the moon ... And I was certain I could see his face.