There's a little living room on the second floor at my parent's house. It's home to ancient books, old radios, a TV from the 1950s, a big wooden desk, and even a display cabinet with some old phones and model trains.

In between a shelf and the frame of the door, there's a vertical and narrow bit of empty wall. You wouldn't even notice it, but my dad asked me to make a vertical panorama so they could hang it there and fill that barren space.

What's up with this aversion for empty spaces? Why do we need to fill everything with stuff?