If the show was about a group of people who were happy all of the time. Their children never got angry and they never got angry at the children and so on and so....well...no one would watch it.
Let's face it. Everyone sits in judgment of another. That's what this show does for it's viewers.
Each viewer pulls from it whatever is going right or lacking in their relationships.
But I will tell you, what I love, really love about TV is if I'm not happy about how a show is going or people make me angry...whatever, I grab that changer and fast forward right over it or them.
Moving right along....be nice to do that in real life, but then it would be boring.