Everyone in France has a title. Wherever you go, you get called by your title. Bonjour Madame, when I walk into a bakery or shop. It used to be Bonjour Mademoiselle until I started walking in with kids. And crow's feet. So, women are mademoiselle or madame, men are monsieur. In many situations, it's considered impolite to just say bonjour. You've got to add the title.
Husband gets a bonus title because he's a lawyer. Maître, he is called, in formal situations where his profession is known. When we fight, if I'm feeling really bitchy, I'll say oui, Maître, using the Tone. Because it can mean title-used-for-lawyers or it can mean master. You can guess how I mean it.
I actually don't like titles. When people call me madame, I usually turn around to see if there isn't an elderly lady standing behind me. There never is. It took me months, but I actually got the Madame taken off of all my bank stuff. Before, without ever having asked for it, it was on my checks, my bank cards, and, of course, all the mail they ever sent me. I wasn't being difficult or picky, really, I just didn't feel like Madame. What does my marital status have to do with anything? Why should that information have to be acknowledged at the beginning of every greeting and conversation, however brief? I'm making a small deal out of nothing, it doesn't really mean that to them, it's just one of those linguistic chunks that is more ritual than meaningful. Anyway, as quickly as is politely possible, I switch to a first name basis, which eliminates all the madaming and monsieuring.
By the way, I got a job. Which is fine. Really. For a several hours a week, I will have to go by my official work title, Madame (fill in with my last name, not husband's -ha! that's a whole other post) and not my current (and very overused) title. MMMMAAAAAMMMMMAAAA!