Open, because kids.

Open a crack so the cat doesn't wake me up at 4am.

Door closed, but windows open and fan on

Closed. The missus and I can be... active at times, and we have nocturnal teenagers.

Closed as I don't really want my roommates to check in on me sleeping

Open to get some air exchange

I removed the door from the bedroom, so 'open', I guess.

I prefer open, but I got a cat a few months ago that won’t leave me alone if I leave it open. So, closed.

Closed, I already have scars from our cat's mad night escapades.

Closed. Otherwise dog sneaks in, climbs up on the bed and falls asleep. The he slowly but surely takes over the whole bed.

Bed room door closed, but usually not locked. 8 sentry turrets have the outer perimeter of the house secured. /s

closed except cat so always open now :(

Always fully open! More airflow, less stuffiness. Having said that, we don’t share a home with anyone else.

Open, because I have a split AC in the living room of my bungalow and the bedrooms get warm even with the doors open. Also the dog and cat would never allow a closed door, and they rule this roost.

Prefer closed, but like many others here, the cat doesn’t allow for that without making her opinion VERY well known.

Closed. I prefer my door closed for privacy reasons, so why would I keep it open when I sleep?

We have a saying in our house... "ghosts" that means close the door we are going to sleep and don't want to let the ghosts in. Closed. Always closed.

Door closed, window open.

Sleeping in the house's veranda, so no doors 😶‍🌫️

Open. I live alone and I have a cat that comes and goes throughout the night. Having the door opened allows me to hear anything that should not be going on in the house.

Closed and locked. (Trauma likely)

Sleeping with the door open should be a crime

Both, because I'm lazy. Whatever the door is at is how it will stay.

Usually closed because I like to be naked, but I would prefer it open for the pets to come and go as they please.

I am staying in a men's hostel. Cheaper that way as I am single. It is so hot here during summer. So we keep the door open at night. Three of us are there in the room. Everyone is ok with that.

Closed. My housemate's cats sometimes pounce onto my bed and wake me up.

The closed door also dampens outside noise.

When sleeping, me close door

Closed, air-conditioning is expensive. When me and my wife travel to colder areas we do tend to sleep with doors open though but it highly depends on the house itself. There has to be a certain vibe or fenshui so to speak where open door feels pleasant and not this uncertainty.

Closed and locked. Open doors in the dark are creepy. Besides I want some privacy for certain "tasks".

Open for air circulation. My fiancee and I live in a too-small, old apartment which, naturally, has trash airflow. Getting the AC to decently reach the bedroom requires multiple fans.