CAM WE REALLY ARE ON A WAVELENGTH WHAT THE HECK. I came poking around here to ask this same question! I see you posted it about a month ago, but still.
For me, I worry that my preoccupation with fashion and clothes means I'm "really just" a crossdresser and not trans after all. I'm a HUGE fashion nerd, and clothes are a big deal to me because they're how I express myself. Also because I'm a fashion nerd, I strongly prefer to wear clothing that flatters my body type, size, and personality. Transitioning would give me the ability to wear the clothes I love and look good in them, but because I'm genderfluid, I'd miss looking good in my old dresses and such. I try to comfort myself by saying I'll still have the same bone structure.
I don't think my transition is all about the clothes or my presentation; I think my preoccupation with the clothes is due to the fact that I AM obsessed with fashion. (I'm an artiste, after all. *hipster glasses on*). But what if I'm wrong? What if it really is just the thrill of "deceiving" people? I don't think I'll know for sure until I've been doing this for awhile. Actually passing as male might help me figure this out, too, but I think I just need practice.
I've also learned through these forums that there are apparently females within lesbian culture who are a lot like me, and pass as male, although they don't identify as male. I didn't know about these people because I'm not a lesbian. :/ So...I'm not sure what that says about me. (I like everyone, but I tend to prefer men.)
So now I'm exploring the butch community, as well as crossdressers in general, to see if I like any of those identities better than FTM. Unfortunately, we seem pretty barren in the FAAB crossdressers department around here. I agree with gennee that it has something to do with double standards in society in general.