I work in a dental office, and have seen the confusion that results in parents retaining their given surname when they marry and have children FAR more than I want to. Hyphenated names are sometimes a pain too, but if both are short, it isn’t a problem. We had some patients who hyphenated their kids names and both parents had 10 letter surnames. It didn’t fit on our “Last name” line…WAY too long. So I ended up using the first part of the last name as the middle name, the last part as the last name. Now, it is always a bit of a pain to find the kid’s charts. BTW, both these kids had 8 letter first names AND a middle name. Now I ask you, is that fair to the child? Lets call the boy Nicholas Evan Williamson-Octavisham…that’s not his name, but the same amount of letters as his. Poor kid.
Then we had some other patients who ended up marrying each other. He had one of those “if that was MY last name I would change it!” last names, and she felt that if either of them were going to give up their last name they BOTH should. So they did. The chose a completely different last name and they seem quite happy with the decision.
Then we had the patients who kept their own names upon marrying, but chose a completely different surname for their children. Mom Smith, Dad Jones and Boy and Girl Brown. Unique solution.
I had a friend who hated his surname, and when he married he took his wife’s name. His surname was Teats.
So my opinion is this…I think if you are going to have children it is easiest for everyone in the family to have the same name, no matter WHERE you got it from. But if that isn’t acceptible to your wife, she wants to keep her “maiden” name, how about this…give the child your last name, and get HERS legally hyphenated? That way, it should be clear to anyone who wants or needs to know that the kids are both of yours. Might make things easier for the children in the long run.
I have kind of an unusual opinion on the whole name thing. See, during the 70’s, when the “Womens Lib” movement was raging, the emphasis on keeping your name was presented as “If I take my husband’s name, I am losing my own identity.” And I have no problem with that, if that is how you feel. But for ME, it made no sense in that the emphasis on your name NEGATES your identity. You are who you are, and if your identity depends on keeping your name, then what does that say? After all, your surname was presumably your father’s name anyway, so… I am not sure if I am explaining my opinion very well here, so if you care and you don’t get it, please ask me to clarify. I am who I am, and no matter WHAT name you call me, I am still me and a strong enough ME that it doesn’t matter what name I use.
If I had married and intended on having children, I would have taken my husband’s name…just for the sake of the children.
Okay, I’m done. 
Scotti LongWinded