There is a cozy sofa ... !

If you have the Parenthood Game Pack, have your Sims set the dining room table and Sims will automatically go and use the dining table to eat their meals.

My Sims also stand up watching TV most of the time, as well as standing up while eating.
It's like they are constantly in a hurry, and don't have time to relax.

you are lucky ! My Sims seem to have a subscribtion to malfunktion !!

Mine do it usually 90% of the time.

you know , i'd like to see the Sim do that on its own !      

Direct them to the sofa and they will sit down and watch it.