Going forward, as the quality of TV shows keeps going up, writers need to seriously re-think the roles/behaviors/scenes of kids/teenagers. I just refuse to believe that kids have to be either pointless for the plot or have to be really annoying, and create problems all the time.
The issue is not exclusive to this show at all. In fact, it can be extended to other family members, too. It seems there is always a cliche role of a kid/wife/husband who is there just to be a distraction and annoyance.