Quote Originally Posted by kimdl93 View Post
the difference, the bright fluorescent line distinguishing (not dividing) TS from the rest of the TG spectrum is the point of knowing with certainty and clarity that one identifies as a woman and possessing the compelling need to live as a woman. If someone cannot make that clear distinction they probably are not TS.
Yes, that's really the dividing line, in my opinion as well. It is the need to live fulltime as the gender opposite their assigned at birth sex.

I do think it's arguable that needing hormone therapy to achieve mental / hormonal congruence is a very, very strong indicator as well. (This shouldn't be the dividing line socially, however, there are individuals who might be greatly helped by hormone therapy, but who can't take it for other, unrelated health reasons.) If cross sex hormones make you feel worse, an argument can be made that you probably aren't a transsexual. However, given the uncertainty of the science behind all of this, I wouldn't take it as gospel.