I lose respect for women who do this. I don't say so to them. But I'm thinking it.
What a ridiculous statement - how do you earn respect by what your surname is? 
So if you met me, liked my company, enjoyed talking to me and engaging with the same interests that I have ................. at that point there would be no reason for you to know if I was married or not. Then you suddenly meet my DH and I introduce him as 'Mr Ragwort' - do you suddenly lose respect for me & decide you don't want to be my friend?
And do you then bother to ask whether I took his surname or he took my surname when we married before you continue with our friendship?. You sound bonkers.
Like others on this thread, I have a complicated history regarding my surname - I took my step-father's surname, never bothered with deed poll or anything, didn't matter .............. so I have never used the actual surname on my birth certificate. I just don't agree that your name defines you, I would hope your actions and behaviour as a member of the human race defines you as an individual rather than a name.