Yes I kept my maiden name. It is not hard to understand.
The year is 2014. Like many other women I have kept my maiden name. Everyone knows this. However we get many Christmas cards, invitations, etc... all addressed to Mr and Mrs X when is is Ms.Y and Mr.X
It bugs me when in laws do it because we tried correcting them politely in the beginning. However after a decade they still do not get it.
Is it really that much of a complicated concept?