I don't particularly care whether or not other women prefer to be addressed as Ms, Mrs, or Miss. However, the use of Ms. solves a specific problem for me.

I am not a Miss. A Miss is a never married woman. I am not a Mrs. A Mrs. is a woman who is married or widowed, and who uses her husband's surname. I have been married twice and I have never used either of my husbands' surnames. My pre-married name is the only one I have ever used. And I am now single. So, political correctness aside, neither Miss, nor Mrs, actually apply to me. Ms. is my only correct option.