What’s the silliest thing you believed as a child that you still find funny?

Not funny but I used to believe that war meant that barely anybody survived, every single person was affected in a very bad way and that every city looked like ruins from the most affected areas. Like everything was destroyed, burnt out etc.

I also thought that those abandoned structures of panel buildings where the homeless, junkies and punks gathered were former burnt out buildings where something horrible happened, people died etc.