You come home after a long day of writs to an empty home. Well no more with your NPC wife/husband option that you can turn on/off at the property sign.
Your NPC siginificant other will have numerous random and witty comments for you. They will keep you company with a tragic tale of their childhood. They will greet your friends who come visit and feed and give them drink.
Some comments from the NPC Significant other:
"How was your day?"
"You look tired, let me get your coat."
"A rat got into the grain again, could you take care of it? You're so brave."
"A necromancer came to the door selling amulets. I told him to hit the road."
"Tell me of your childhood again."
That and many other possibilities.