So I was, like, 8.
I read this one book where it was like a horror-comedy novel for kids (not Goosebumps, it was something else). Thought it was kinda funny, went to bed.
The I swore I saw something move in the darkness.
Grabbed a flashlight that was near my pillow, and began to check around. Under my bed, the closet, on top of the bed, the floor, the hallway that my room opens to, even the dang sliding glass door that's locked.
Eventually my already insomniac *ss got back to bed, I never forgot that.
Then I joined the FNaF fandom when I was 10/11.
I don't think I need to explain further.