you've just nailed my pet peeve........why does one need a title at all. I can almost understand it if some grammatically correct correspondence of immense importance is to ensue, but in my experience that is seldom the case. Where it is the case I am seldom given the salutation of Mrs X, but more often addressed as personal and warm as one can get with Dear Customer, or worse, Dear Valued Customer. If one has a name that might apply to either gender there may be some sort of assistance rendered by a title, but at this late hour of the night I am hard pressed to think of any........My former husband has an old fashioned male name, that became popular as a girl's name about the time he reached high school - so he ended up on the girls list each year....he survived, and went on to name his daughters silly fashion names that they may struggle with for many years.
If I want to buy socks or notepaper on line the sender, package or mailman are all unlikely to care as to my marital status. (Where forms ask for my marital status I usually respond with something along the lines of dubious, confused, uncertain or doubtful depending on my frame of mind at the time).
My name prior to marriage was complicated, and after marriage it is long and very prone to mis-spelling........if I had the will I'd change it to something else, but then I list all the things I'd have to alter and go off the idea.
I could rant all night...........
Joanne in Perth, WA