Like many of the other reviews, I DO like the show, but I want to echo some of the comments.
I have no problem with their personalities; Chip jokes around but he knows what he's doing. Joanna is a bit serious, but has design talent. Their clients are all hetro couples, unlike other HGTV programs. Their apparent strict rules about life styles makes the program stick out as not being typical of HGTV's mission.
On the design side, I find that taking down walls and creating a typically fashionable great room look is boring as hell. Does everyone in Waco want the same style? Why must all brick be painted? Why is there typically a lack of color and style flair? Perhaps they select clients with the same style aesthetic as the Gaines have. Who knows? Other HGTV shows like Property Brothers and House Hunters VARY the type of people looking for properties, as well as VARY the style of the clients. "Fixer Upper" does not.
Finally, I understand that none of the furnishings remain with the clients, unlike "Property Brothers", where the clients often use some of their old furniture.