"Yeah, why isn't there a point," echoes Wagtail, rather more pointedly. "You keep saying you can't go on, there's no point. But you never tell us why."

Which means Ken thinks he can't tell them. And Wagtail's not unfamiliar with that feeling. He goes on. "If it's making you so miserable that you have to go back, maybe the thing you have to do isn't so important."