Yes I shut the door, I never use to when we had our house tho. We had a bathroom in the master bedroom, lol....... i just shut my bedroom door instead.
sometimes our place has really terrible feng shui. if you open the front door, you can look up the stairs right into the bathroom. someone with about 3 brain cells designed this place.
if there is no one else in the house, yeah i leave the door open, but i always close it if im not alone.
i always close, unless its the middle of the night when every1 is sleeping or no one else is in the house.
I always leave my bathroom- and frontdoor open hoping that some hot girl is passing by and decides to take a shower with me.
I have my own bathroom from my bedroom. If I'm using the toilet I'll usually leave the door open. If I'm showering I close it.
even if i do, it doesn't stay that way. with 2 kids in the apartment, we really need a revolving door! although the thing i love most about the bathroom is, of all the rooms in the apartment, the bathroom is the only one with a door that locks!