Is taking your husband’s last name after marriage an outdated tradition?

With couples getting married later and women already established in their careers with their own last name, does it make sense to change things? Then there's the hassle of all the paperwork and ID changes.

• If you didn’t take your husband’s last name, what was the reason?
• Did your husband actually take your last name?
• Does it only make sense to take your husband's last name if you have kids?