Closed because it’s the poop room.

Human monkey brains like enclosed spaces for security especially when we are the most vulnerable. Closed doors gives you the impression of safety.
And on top of that I have a window in the bathroom that’s not have any balckout curtains on it. So it needs to be closed, else I would wake with the sun. And that’s not a desired outcome.

Closed.

Your average closet monster is restricted by the size of the closet. Can you imagine what size closet monster could lurk in an ensuite?

Married for 30 yrs. We never shut the bathroom door. Period

I prefer to keep it open to get airflow circulating through this room that sees a lot of humidity, but my wife prefers it closed (along with the closet) due to monsters so it’s usually closed unless I use it last before bed and slyly keep it cracked open. No monster attacks to report as of yet.

Open, because there’s a window in there and it’s the only way to generate a through breeze if I have it open and the one in the bedroom. If I were to keep the bedroom door open the dog paces back and forth all night.

I never close the door because it doesn’t matter to me. Boring answer yep.

In my home, everyone puts the seat down, then flushes. The seat stays down at all times when not in use.

The bathroom off our bedroom, has the cats’ litterbox in its closet. I cange the litter 2-3x a week, and always wash the bathroom down at the same time. We also have an air purifier right outside the door.

So, we keep the bathroom door open unless someone is using it. That bathroom is reliably the cleanest room in the house at all times.

closed for less sunlight through the bathroom windows that reflect off my mirror out into the room

I don’t like open doors directly connected to where I’m sleeping, unless I’m just taking an afternoon nap and someone else is awake in the house. We keep the bathroom door closed enough to just before the doorknob latches, so it isn’t noisy opens/closes the door when using the bathroom in the middle of the night.

Open. The midnight sprint to the toilet needs no obstacles

I keep doors open so that there is free airflow. I live in a high humidity area.

I keep it closed because I like my bedroom to be as dark as possible when I sleep.

I position night lights at key locations through out my house so one can move around at night and not have to turn on lights, which can suck when you are in the wakening process. Also it makes it easier for guests to move around the house.

So, i have a night light in each of my bathrooms, one in a corner of my kitchen etc.

Our washroom is connected to the main hallway, where it goes to an open kitchen and living room. There’s a door to our bedroom there, making a loop. Our cats get the zoomies and run around and around that loop, making for some good cat crazy entertainment.

In my last apartment, the bedroom that I slept in had a sort of “open floor” layout to it, so the bathroom was kind of just there on one side, there was no door to close. It was kind of nice, I just kept an air purifier on that side of the room.