I was the last of my surname, my 2 brothers with the same surname changed theirs to my mums maiden name when our parents split, an act of vengeance from my mother against my father.
Even at 9 years old I knew I had to keep it just so the name didn't die and the 5 years of abuse it caused me from my mother and the resulting BPD there was no way I was going to give it up.
I now have a son and I hope he keeps the name going, as for my daughter, when that time comes (if the boyfriend passes the dad tests) then that choice will be up her.
As for double-barreled names, where does it end? What happens when a child with a double-barreled surname grows up and gets married? do they go triple-barreled? choose which one they prefer of the 2 in order to double-barrel it with the new surname or give them all up? bloody stupid things.