>>116582314It is a very clear concept, on several levels and it is clearly drawn from the roots of the creators as opposed to city-dwellers just making fun of hicks. I don't think it could have lasted this long if the creators and writers were just "making fun of" hillbillies. That concept would've last 13 seasons, if there wasn't a certain love behind it.
So to summarize: I think it is still going strong because the creators are real hicks and hillbillies, who went to college, and are translating it for the masses.
I am a hick myself and the show is pretty accurate.