To me it shouldn’t matter, but it feels weird having the bathroom door open all the time. Also my shower sometimes does a midnight clunk for no obvious reason and it’s loud.
I never really thought about it until now, since I’ve never lived in a “master bedroom” with attached bathroom until now. Still on the fence, leaning towards keeping it open for convenience and airflow/dehumidification more than anything. Obviously I shut it after things get smelly.
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.