In our Hermann house we have only upholstered chairs, no sofas. I may carry on that tradition once the renovation there is completed.
I do have a sleeping-appropriate sofa at home, and I got one that supports sleep (one with removeable back pillows) because my bulldog will someday be too old and sickly yo climb the stairs to bed, and I will stay downstairs to sleepwith him. I wont want him trying to climb stairs when that day comes.