Non-transitioning MTF here... I've also chosen not to transition at this time, unfortunately after coming out to my friends, parents, and my wife's parents. It's true what someone said to me after I "came out" as trans.. there's "no backsies" on this. Friends have already told me that they'll always see me as "Johnnie" now, and in some ways I like that... but I can tell that others might be irretrievably weirded out, or think that I'm an uber-flake.
The bottom line is I've decided not to transition because of marriage and family issues. At the end of December I had the triple-whammy of my wife telling me that I had to choose between her (and our son) or transition, and she also found out sordid details of my past infidelity... plus, I lost my job. So now I'm unemployed and trying to keep my marriage together... my trans issues have landed squarely on the back burner..
I could have chosen to separate, move back to Seattle, and start my transition, but I didn't... I'm with a new therapist, and trying to sort out if I truly am a TS, or if my desire to transition is a symptom of other, deeper self-esteem issues..
So for now, it's back to looking like Jack Black in bearded mode... it's good to be back here on Susans though..