My number one argument that Santa Claus was real was the fact that it would be ridiculous and next to impossible to teach all the grownups in the world how to be Santa Claus.
A childhood belief about father christmas

others believed things like this
- I used to believe that the "real" Santa Claus was at Macy's in New York City. All the rest were fakes. — Marcia
- I used to believe that, if God would die, Santa Claus would be boss.— Judith
- I used to believe that the Holy Trinity was Dad, God and Santa Claus!— Cathy P.
- When i was little, i thought Santa Claus was my grandfather— Junie
- Wehan I was little I used to confuse Jesus with God with Santa Claus.— Gui
- when i was a child,i used to believe that Santa claus drove a car and all the presents were in the boot— narration