Well, I consider changing my last name, because it reminds me so much of who I was and what it represents. But I guess that`s just unresolved issues with my family talking.
People on forums know me as Sidney Aldaine, but that`s just my author`s nickname. I think your surname represents not only you, but also your legacy, where you come from and it`s perfectly fine to change that, depending how you feel. Will I change my family name eventually? Gosh, I wish I knew.