To answer your question I should say that trans people from today is different from few years ago.
Today information is abundant but i think that most of us started as Crossdressers.
Our perception on gender is what we see and the obvious difference between a woman and a man is how they dress.
Additionally to that, the deep rooted stereotype in,.especially men, that a man is "less man if is femenine" stop so many on do it. If you add religion issues, that are very strong in our minds, most of us do it in secret for years but to dress is not enough and we need the assurance and acceptance of the world around so we start going out.
The rest is history and it takes some guts to go against to what is deep rooted in our minds to accept and proceed into transition.
That's basically my experience.
Unfortunately there's that huge confused component of the difference between sex and gender and many Crossdressers fall into sex promiscuity thinking that to be a woman means to have sex with a man that add more confusion and secretism to the equation.
I personally believe that, especially on this website, there are many Crossdressers that resist, don't believe, don't know, or can't move forward to be their real one, for all the obstacle mentioned, to live as woman, so they are transgender.
A transgender born as one.