There is nothing uglier than an open door…
“From the very first film I saw, Flavor of Green tea over Rice, I was fascinated by the way japanese use space in their lives, and by these doors that slide and move quietly along invisible rails, refusing to offend space. For when we push open a door, we transform a place in a very insidious way. We offend its full extension and introduce a disruptive and poorly proportioned obstacle. If you think about it carefully, there is nothing uglier than an open door. An open door introduces a break in the room, a sort of provincial interference, destroying the unity of space. In the adjoining room it creates a depression, an absolutely pointless gaping hole adrift in a section of wall that would have preferred to remain whole. In either case a door disrupts continuity, without offering anything in exchange other than freedom of movement, which could easily be ensured by another means. Sliding doors avoid such pitfalls and enhance space. Without affecting the balance of the room, they allow it to be transformed. When a sliding door is open, two areas communicate without offending each other. When it is closed, each regains its integrity. …”
A great excerpt from a book which I heartly recommend: The Elegance of the Hedgehog, by Muriel Barbery.