Obviously there is no sinlge answer to this question. It all depends on how the indivudual feels. I'm am on the category stated by the person who started this thread, in the sense that I dress because it feels food and natural.
Nicolsmyth stated,
"I am a crossdresser. I have never felt like I was trapped in a man's body. However, I do enjoy dressing and feeling feminine especially the feelings of relaxation and calmness that comes with it. It's my "warm bath" if you will."
I can easily identify with this.
There is a wide range of views, going from the one above to those who feel they are women trapped in a male body. These variations make this forum fascinating.
In the end result, it is each to his own.