I love '30 Rock.' It's one of my favorite shows. It's certainly the gold standard of comedy writing.
Well, the average person comes home from work really tired, and just wants to flip through channels until they land on the thing that's the least objectionable to them. They're not looking for their new favorite TV show because they know that that search will take forever and they'll go to bed unhappy.
There's a fine line between a stream of consciousness and a babbling brook to nowhere.