my door doesn't close fully, so I close it all but the crack that is forced. I do this because people in the house are up and down constantly, and my sleep schedule would bd interrupted if I left it open.

Closed. Privacy ftw

Open for ventilation and to hear a potentially screaming kid.

Gotta have it open, it gets way too hot in the room otherwise (classic trailer heat/cold problems). Luckily my 2 dogs would wake me for any issues and we live a little ways from civilization so there are very few nights that the wife and I worry

Closed, it keeps the A/C in and other house noises out. It's also safer in the event of a fire or if someone breaks in.

Open, doggo likes to do perimeter checks throughout the night

Closed. The only door I have is the door to the house floor, sooo..

Well, I have the bathroom door which I always leave open for ventilation reasons, but well.

Open slightly so I can let air flow my room from the window

Door open, windows covered. Allows the pets in and out and keeps my anxiety of people looking into my room on the low. Bonus for black-out curtains

Open straight into the hallway so my neighbors could walk in if they wanted to

Closed because I sleep in a trailer and if I had the door open a cougar would come in and tear out my throat and devour me.

Closed, I'm 2nd shift so my wakeup time is late enough I have to block all sunlight.