OP, one more thought....if you think it's a big deal to your DH-to be, then have a discussion with him and explain why you want to keep your name. I will say that I never had that discussion as he knew changing my name wasn't an option for many reasons.
Finally, I think it is common for some women to keep their names regardless of culture. Heck, look at Congresswoman Gabrielle Giffords who is married to Commander Mark Kelly. I think it's just all about what you and your DH-to be are comfortable with.
In my case, my MIL hated the fact that I continued to use my maiden name. It didn't bother me because she hated many other things about me and I can't say I ever felt warm and fuzzy about her either. But, we are, nearly 22 successful years of marriage later and my DH and I are happy, regardless of what name is used. In fact, when we go out for dinner it's usually (my last name), party of 3 (mine is just a lot easier to pronounce than his). Also, we can tell when we get mail from people who don't know us as it will either be Mr. and Mrs. HisName...or Mr. and Mrs. MyName. We generally know that we don't have to open those envelopes immediately

!
Back when my mom and my (now deceased) MIL were young and newly married they didn't have their own credit cards either! Does that mean we shouldn't today....no way!!!!
So, back to my original comment, do whatever works for you and your family. Whether you have kids or not, it really isn't that confusing. Heck, one family that my DS used to go to school with had 3 last names in the family (mom got married changed her name, had a kid with husband #1 who died; many years later got remarried and had children with husband #2 but chose to keep her maiden name as she was now known as Judge Maiden Name.) Yep, by "old-fashioned standards" I'm sure her Christmas cards are complicated....(but when they send them out, it's just Merry Christmas from Grace, Bill, Matt, Cara and Christine).