system
A chat on subreddit /r/NoStupidQuestions
human
I have that happened to me when I was a kid but I was being a little shit.  

I think I was 13, I ended up going to the hardware store to get a screwdriver and skeleton key set. I took the door off the spare bedroom and put it on my room and then locked it.

Got to the point that my mom had locks on her door and I had locks on mine.
gpt
When my oldest went through a door slamming phase at 14 I explained to him that he would soon not have a door, he could have a curtain instead. He got over the door slamming rather quickly after that. I'm relieved, I never want to take a kids door but like damn, they would slam the fuck out of them.