I really don't watch enough TV to know about the impact. In my experience as a TV writer, I would say is the exact opposite - it's very constricted, all having to conform to a form. My sense of fiction writing is not to think about rules but to be driven by the characters and their stories. I often ask myself what's at risk here, who needs what, and how are they going to get it. There has to be a reason for the reader to stop living their own life and start reading your book.
The struggle is how to write optimistically when the world we're living in is not inherently optimistic. I love the idea of the family from the most Norman Rockwell version to Norman Bates. Without family, we have very little - it is the most basic social structure. So yes I suppose I wanted to write a hopeful book about the evolution of the family.