I see this as sort of a where are you on the spectrum thread. A somewhat different angle perhaps-
Those on the TS side will usually give the advice, transition is only for those who feel they must, and if you don't feel you must, don't. Now, for some, they may for whatever their reasons are, not transition in any way shape or form, but yet still identify themselves internally as a woman and a woman only. Most though, once they do recognize themselves as a woman 100% will typically make some big changes in their lives.
So, for me, why haven't I made the leap??? Several reasons. But I would suppose any one reason that is enough to make me feel that I am not 100% female internally, that is enough. I personally consider myself to be in the TG spectrum. I consider myself to be TG by the definition it currently holds, although for many nowadays, TG is the new TS. I consider myself to be dual gender. I identify with both male and female, although I do not fully identify with either. I am a man who is more feminine, more like a woman, but I do not identify AS a woman. I do have male as part of my internal core, and masculinity to some degree as well. For me it is frustrating to not be a woman, but yet it does not feel wrong to be a man. I do not need to transition to survive. For me, it would be harder to transition than to live the life I am living now.