I greatly appreciate Thisisdard's passion and agree with his views.
We need to find some way to make Nickelodeon see the light and sack the new writers.
There is one main factor though, and that factor is Nick basically using Spongebob as a tool of corporate greed. As long as the show continues, Nick will get more money. New episodes means more DVD's. As long as the show exists, they'll keep selling Spongebob merchandise. I think Spongebob has gone from a show Nick aired to entertain people to an excuse for Nick to sell more stuff and get more money.
However, they do realize that they actually need viewers to keep a show running, so they over-advertise Spongebob. That's one of the reasons Atlantis Squarepantis got so many viewers, because Nick advertised the hell out of it, even on other stations. The false advertsising of the special being a TV movie contributed to this huge outcome, simply because people had waited years for such a thing to happen (45 minutes does not equal TV movie, it has to be at least an hour long).
Basically, they're using Spongebob to get more green and they beg people to watch the newer episodes to maintain public interest in the show, which leads to people buying their products.
Nick should know by now what the writers have been doing to the show. If not, then Nick seems to think, "If it's Spongebob, it's automatically good." If they do happen to have this mentality, then that's just stupid.
This is just an educated guess, I don't know for sure. All I know is that the writers are talentless and lazy and need to be sacked, and you probably know that too.