I guess it works for those people who do not have an imagination to be able to see what the room would like with furniture. But as you said that sometimes it might be better to see it though your eyes with your own furniture. You may be disillusioned buy what you see in the room if it were staged.

I say this because you might have more pieces of furniture or larger furniture than that which is displayed. For example: some people have smaller size couches than other people do, while others use chairs or might have coffee and end tables.