I kept my maiden name. It's not a political statement or some manifestation of uber-feminism. Professionally, changing my name would be an ordeal. I did offer (though I didn't really want to) to change it, and his answer was "I wouldn't change my name, why would I expect you to?" Good answer dear. He's as proud of his severely German surname, as I am of my French one.
The important thing is that YOU (and to a lesser extent, your spouse) need to be comfortable with what you do.