Before my wife and I were married, she floated around the idea of taking my last name. And although I was flattered by the gesture, I didn't really think it was the best move.
One, because I like how her last name sounds with her first name. I think it flows way better. Two, because the origin behind women taking men's last names is pretty darn sexist. The laws surrounding women taking men's surnames pretty much signal that the woman is now property of her husband, that's the TL;DR version of it, anyway. And I wasn't really about that.