Deb, it is good to see that you are back. I hope your fortunes improve.
I know that we have been over this CD-TS thing any number of times. I don't think any of us are going to convert others to a particular way of thinking. As a CD I do feel a certain sense of solidarity with my TS friends. While no one can presume to know what it is like to be someone else or to feel precisely what someone else feels, we do have some common emotions and experiences. One thing that we probably share is the experience that physiological sex is not the same as gender. It is one thing to acknowledge this fact intellectually, but it is another to feel it existentially. To some degree or another I think this is one thing that unites all members of this community. Although we are all individuals and resist being put into categories, we are all here for a similar reason--we need to be with others who are like ourselves.
As far as the issue of whether being CD is a matter of choice or not, it is important to distinguish between actions and underlying feelings. We do not choose our feelings--they are the result of our physiology and our experiences--but we do choose our actions. That I feel a need to wear women's clothing is not a matter of choice for me; that I act on this feeling is a matter of choice. I would suppose that a TS could say that the fact she feels like a woman (or a man) is not a matter of choice; that she acts on this by taking hormones or undergoing surgery is a matter of choice. If gender is a matter of how we feel about ourselves rather than how we act, then none of us chooses our gender.