Do you close the bathroom door even if you're alone?

Let’s say you are completely alone in your house/apartment/whatever and there’s absolutely no chance of anyone entering your home anytime soon. And you need to use the bathroom, whether to take a shower or go potty. Do you still close the door?

Personally, I live alone with just my kitty as a roommate, and I love being able to leave the door open…especially because my bathroom is tiny, so leaving the door open makes it feel a bit more roomy.