I also happen to be of the old school when it comes to that.
There are some cases where I can see the reasoning. I'm familiar with the example of an Air Force captain who decided to hyphenate his last name when he got married. The fact that the name in question was "Clapp" no doubt contributed to this decision....
And how many of them are already or were already being cuckolded by their lovely brides? Wimpy men need a relationship too I guess.