My DH was very adamant about me taking his last name, even though I didn't want to. I had a somewhat stupid reason: I adore my maiden name, and really disliked his (kinda still do). I had no other reason to keep my name but I was upset about giving it up which seemed so trivial. DH was hurt when I said I wanted to keep it - so I took his name. Now it is one of LO's middle names.