I think people watch the show out of habit, as there is nothing else on at that hour (unless you count the hour long episodes of "Emmerdale") and perhaps they have the vain hope the show will get better.
I still believe the BBC should make a public apology and reward us with our licence, after THAT episode last night.
Although, it wouldn't surprise me that they resort to the tactic "Neighbours" has resorted to, and ask the fans to help write the stories. I bet you, most of the people that do send their own scripts in would resort to axing it.