Modern script theory seems to be that we need to have seconary parallel plot lines involving the main character's personal lives, in order to make them seem more like "real people" to us. You see this on all sorts of programs. For the Closer, we saw Brenda's interaction with Fritz and her parents. For Major Crimes, this is what they came up with for Raydor. Unless and until they come up with some other personal life scenarios for Raydor, my guess is we're stuck with this story line.