This show has been weak from the start. The characters are stereotypical extremes (redneck, Baptist hillbillies and a conceited college professor with nothing better to do). Stereotypes can be used for comedic effect when used properly, but this is done to the extreme and just makes the show boring.
At no point do I see anything in the show as being truly realistic. With many other TV sitcoms/shows I can imaging myself, someone I know, or at least someone made up being a member of the community within the show. I can't do that with Perfect Harmony. I'm a music and church person and this show doesn't relate to anything in my life.