What is less focused on is the fact that John's mid-life crisis has collided with having to be a father later in life than he'd expected and made things less fun. John isn't expected to want to have fun or enjoy life to any great extent. John is expected to meekly sign on to whatever stupid thing Elly might want and stumble on in a zombie-like state until he gets to finally achieve his well-earned reward of sweet, sweet Death. John is especially not allowed to remark on the fact that all he's done in life is trade what's making him miserable. This is because he comes equipped with a receptionist who, despite being seen by Elly as a potential threat to her marriage, sees herself as Elly's agent. Her refusal to trust her employer to stay faithful means that John is about to shoot off his mouth and make Jean into Marital Fidelity Cop looking for signs that he wants to duck out of the marriage.
This is accomplished by his being one of the key players in what Roger Ebert called "an idiot plot" because he makes an ambiguous comment about being rid of a crazy woman. Since Jean has a memory, she assumes (somewhat reasonably) that John is talking about Elly herself because of all the times John has (very reasonably) questioned Elly's sanity. The reason that it's the sort of idiot every-plot that animated every