What's my hang-up when it comes to traditional D&D, eh?

I need to get something out. Maybe someone(s) out there can be my temporary RPG headshrinker... like a virtual Lucy van Pelt setting up her psychiatrist booth at a moment's notice, whenever there's a nickle to be earned from some Charlie Brown type.

I know I've written several posts recently about my internal flailings pertaining to D&D, but I felt like I needed more catharsis.

Anyway, here's my issue: I can't seem to shake the desire to do straight-up, traditional D&D. What I mean is, every time I think about running a sword & sorcery game using the Crypts & Things rules, or running a cyberpunk or post-apocalyptic future campaign using Savage Worlds, eventually something inside me moans "Oh but that's not D&D! You need to GM D&D!"

Am I fighting against simple inertia? What's my hang-up on D&D? I continually ask myself what I'm looking for, why I can't shake this feeling. What is the genesis of this yearning, this "fear" of branching out from D&D? Does anyone else out there feel this constant internal push to stick with the "original fantasy game?"

My latest yen is to run B/X D&D (with the B/X Companion and Complete B/X Adventurer from JB at B/X Blackrazor included) in the Dawnforge campaign world. It haunts me! Argh!

Look, I know most of you don't really know me and all the inner workings that make me an individual, so I know you can't really diagnose the specific origins of my obsession. I guess I'm just looking for a bit of "misery company." At the very least, you know that I struggle with Gamer ADD, and I'm sure that particular bogey man has something to do with this.

I am still relatively early in my return to the table-top after a long hiatus, so perhaps something inside me has determined that I am not yet done re-exploring my D&D roots, at least when it comes to being a game master. I currently have no problem being a player in games that are not D&D-centered. Therefore, I'm not sure how long it will be before I can run anything but D&D-esque games. There's also the fact of my life situation as a busy husband and father with full-time job and a mortgage, which lends a certain desperation to my gaming activities, as I have little time to prep and play RPGs.

I would love to hear your thoughts on this subject. In the meantime, I'll be struggling internally...