Well, for many truckers, the CB is a tool of the road and at the loading docks. For instance, Channel 19 is still used when a wreck happens and everybody's curious about what the traffic stoppage is all about, location of the wreck, how much of a hold-up will it be, what lane should I be in, what alternative roads might be used as a bypass, and if you're stuck for a while in traffic, some banner back-and-forth until the crisis is over and the road is cleared.
As far as entertainment, the CB has long been displaced by smart phones, cell towers and satellites.