The average viewer's attention span is short and needs to be recaptured regularly. It's all management and marketing deciding what the next controversy/intrigue/bright shiny object/hair dye will be to catch our eye. These shows have a life span and they know it. This just keeps the top spinning. When they asked a long time male celebrity why they've never been Sexiest Man Alive he said "because I don't have an agent." All of this stuff is arranged and negotiated via agents. Don't be so easily impressed people.
