Right. I am prepared to be flamed.
STDG - you don't say why you use Mrs but you say it's not because you get more respect. Fair enough, but I have heard many women, including on MN, say that they feel they are treated with more respect because they're married. Perhaps you use it simply because you are married and feel that's how it's done. Or perhaps its because you are proud of your relationship with your Dh and want it to be visible to all. I don't know.
However, I believe that all women who choose to use Mrs are misguided. I wish I didn't. But, while you and millions of other women may have lots of good solid reasons for it, ultimately, you are choosing to define yourselves in public by the fact that you are connected to a man. In a way that no man ever does in respect of his relationship to a woman.
We use titles because our society still says that it's not appropriate to address someone you don't know, in a formal environment, by their first name but that we should use a title that at the very least demonstrates their gender, but may also reflect their education or professional role. Or in the case of women, whether or not they're married. That may well change and we'll simply be B Loving or Bling or Bling Loving. But until then, I wish women would all become Ms so that there's no disparity in the information I give vs that of DH.
PS I had an interesting experience a few months ago. A very pleasant delivery person arrived to deliver something for DH. I answered the door with DS in the background. He greeted me with "Hello M'am, Mrs DH Surname?" and when I gave him my own name for the form as I didn't take DH's name, he then started calling me by my first name. Now, that may be because he now knew my first name, but I suspect it was because I had a different name to the person on the parcel, was looking after a baby and looking domestic, so he assumed therefore that I was the nanny or similar and that therefore I did not need to be referred to in a more formal manner. I suspect if I'd been Mrs DH he would have continued to call me Ma'm or Mrs DH as I would have been worthy of more respect. For the record, he was unfailingly polite in both formats and I was not in the slightest bit offended to be called Bling rather than Ms Loving. But I found it interesting.