While I would fit right in with most of the responders here, I would self-identify as a geek, not a nerd. That was middle school for me. Geeks are cool. Sort of. Well, we like to think we are. Among ourselves. In our online communities which accept us without judgment.
Nerd, geek, whatever; these handles originated as insults from people who were typically more popular, more physically coordinated, better looking, richer, and had lower grades. Now that we have all grown, and some of us have matured, we recognize the inherent jealousy in the insult and accept it as a badge of honour.
I'll see you all at the next Comic-Con! I'll be the one in the Master Sergeant getup.
Blessings,
Dino