Making a commitment to watch a television series isn't something to be taken lightly. It's just like any other relationship - there is a set expectation that it will deliver, leave you satisfied, and occasionally bring you breakfast in bed.
Comedies and dramas are not exempt from breaking hearts, though. Sex and the City slumped in it's mid-seasons; Weeds lost it's footing in season four and five. One of my favourite new Canadian series, Being Erica sadly came down with a bad case of "people don't really act that way" syndrome this year. Faced with a commitment dilemma, the viewer must decide whether to ride it out, or cut and run.
Personally, I am willing to give a series multiple second chances - usually half a season's worth - before declaring a moratorium. Even then, it's a tough call to make. You were there for a reason. You loved the characters - the premise. The story. What happened? What changed? The answers are often locked inside the writer's room, never to be revealed. Disagreements? Network meddling? Bad showrunners? There are shows like United States of Tara that have flipped entire staffs faster than a Denny's flips pancakes, and have still managed to come up consistently smelling like roses. So what's the magic equation to keeping a series on air and alive?
Hopefully I'll have that answer for you someday. Meanwhile, I'm going to disappear into The Walking Dead premiere again. Yes, again - sometimes one slice of cake just isn't enough.
PS: Philsy, over at... somewhere... uhh... anyway - Philsy is participating in a little event called Mo'vember. It's a facial hair extravaganza aimed at expediting a cure for prostate cancer. Philsy's brother is a survivor. He's also honouring my Dad, who actually died from Lymphoma but sported a fine moustache for most of his adult life. I don't like to harp on donations, but if you're moved to, here's the link: http://ca.movember.com/mospace/978162/