Never changed, never would. When I got married, my ex asked me to change my name, and when I asked why he said "Well, it'll be easier if we both have the same name." So I said "Great, good point, why don't you change YOUR name (which is a PITA to do logistically btw)?"
His mouth dropped open and he said "WHY would I want to do that????" I answered "Precisely." That was the end of the discussion.
Tam, you can always use your original name professionally and change your name for personal reasons. I knew a lot of women in business who did that.
I also have a friend on her third marriage. After her two divorces, she had all kinds of trouble going back to her single name. When she married for the third time she said "Fuck it" and kept her own name. That marriage is WAY solider than the other two, interestingly and absolutely non-related!