Do you have a problem with your hyphenated surname being too long, and having to choose between either your maiden name or your husband's name anyway?
I have a married coworker who is Greek. In Greece, when a woman marries, she can't take her husband's name; she has to either keep her maiden name or hyphenate (different rules for different countries.) So she has hyphenated, and is legally Mrs. Maidenname-husbandsname. However, whenever she fills out a form or types her name in a computer, there's never room for both names, so she is known everywhere as just Mrs. Maidenname because she gets cut off before she can write the second half of the name.
So, even though I think hyphenating might be a good choice for me, I'm wondering if it is even worth the bother because I'll have to pick one name or the other when filling in a form. For example, my maiden name has 8 letters, but when I type it in to my computer at work as a user ID, I leave off the last letter because there's only room for 7. There's no way I would be able to fit my maiden name and my future husband's.