I plan to keep my last name. In my opinion the woman should not TAKE the last name and get rid of her own. First reason...It helps in family research. Most middle names are older family names and helps future generations figure stuff out. Number two...I have a feeling I will get divorced. I don't want some one I'm not married to, to be legally alowed to call her self Mrs. ******. If she hyphanates ******-NNNN or NNNN-****** I wouldn't mind. But...for my children, I'll leave the name up to them. Ideally My children will have a first and middle name, a "confirmation" name (i'm not catholic, but my children should confirm something, not neccesarily religion). Also possibly my wifes middle name (if its a family name), my wifes mother's maiden name, my mother's maiden name, and both last names.
All legal documents.