What Girls Said 1
Lol how is that sexist? You're just new to the idea, most people are because pretty much everyone has grown up being taught "The woman takes the man's name." Tiz no problem, the more you ponder it and read up on it, the less weird you'll feel about it. :P :D
What Guys Said 1
Its just a tradition now. Plus it identifies everyone in that family as relatives. I guess its completely up to the couple, but I know which I would prefer to do.