I did not have mine changed legally, although when I filled out the wedding license application, I listed my name as Megan Marie DH'sLastName MyLastName (no hyphen). That way, the two are not linked, and I could go by one or the other, or both--in either order.
But like I said, I didn't change mine legally. I do, on occasion, use Gerst Rocker as my last name(s), but by and large I am Megan Rocker everywhere. I never, ever go by Megan Gerst.
I never intended to change my name when I got married. DH made a few half-hearted attempts to convince me to, but when I burst in to tears and hysterics getting the wedding license b/c I didn't want to change it, that was pretty much the end of the discussion :p
My thoughts were this:
1. I like my name. I find it rather awesome.
2. All of my work and whatnot is under my original last name. What's more, most everyone addresses me by that name (including my husband). Very few people call me Megan.
3. I like my name. It is the name I came with.
4. I think the tradition of the wife always taking the husband's last name is silly. I mean, I guess I can see why two people who are married might want the SAME last name, for convenience sake (or for a bonding thing or whatever)...I just don't think it should always be a one-way street. I don't care if OTHER people change their name--but for me, I think it's silly.
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