I'm always aware of this when I look at model rooms for designer furniture. They are always alarmingly spartan. With that image, it's easy to notice that without the pressure of real stuff, your mind prefers it not be there.

That always struck me about IKEA. It tries to have both by trying to appeal to high design while filling their model rooms with clutter. It's very telling and a wonderful business model since they'll sell you the stuff: moose spaghetti, tiny candles, cacti.