Transvestism is not a layover on an inevitable destination to transsexualism. Many of my TS friends have had one hell of a hard time trying to transition etc. in their lives, and I can understand why one might be in denial about being a TS, it is not a road one would want to have to take.
However, not all of us who dress feel we are in the wrong body, or ever felt that way. Some of us only want to dress occasionally, or to put it another way we have a finite appetite for dressing. I was visiting with some trans friends this weekend, en drab, and I get the usual grief about why I don't feel an irresistible urge to dress like most others there. I can take it or leave it, I am fine with being a male and I am not ashamed to be seen as a male regardless of my friends' gender orientation. Not all of us are TS, not all of us hate being male. One can indeed like dressing occasionally, and still feel like a male. Amazing but true.