I kept my ex's name as the kids were young and it was just easier on them, also I had made a career with that name. Then he remarried and I thought I should change it back to my maiden name, but his current wife is a doll and she told me it didn't matter to her at all, so I didn't.
Then a few years later I remarried-- and I have now been married to my second husband aka current and last husband-- longer than my first.
But back then remembering what a hassle it was the first time to change all the documents, when I remarried I filed to be legally called Shiny *middle name* *maiden name* *ex's name* *current husband's name.*. Lengthy, I know. But this means I can use all and any of the names legally and did not have to change ANY documents at all!!! Including I can sign my checks any which way.
Professionally I continue to use ex's name even though my kids are nearing 30 now. In personal life, I use current husband's name. It's kind of nice having the two split like that. If a coworker and I are close enough, they know my married name and can find me on Facebook. But if we're just coworkers and not that close, they have no idea and can't find me on Facebook--- and I'm perfectly fine with that!