Gender assumptions

Its seems that in 99.9% of societies around the world, the roles of gender are precise and divided.
But really, it has developed naturally throughout time.

Also, we associate a person with a specific gender by the way they look and by what we know.

I think some people who have transitioned or are at another point in their transition, like when people do not know about their history, because they can be totally gendered at their desired sex.

What I cannot comprehend though, is when people meet a fully transitioned person, and have no idea that they were, in their other life, the opposite sex. When they "find out" about their situation, they all of the sudden start using the wrong nouns.
Now, the only time I use the wrong nouns is if a person looks to be androgynous.
But if a person is obviously presenting as a certain sex....one should be courteous enough to address them as such.
(I make exceptions of course for people like Kris, whom I know is female, but presents as male bc of not starting the transition process yet. That is, if I know of their situation).
I do not want to act like I am this wonderful person who does everything right, but the women and men I know that have transitioned, and some who have not....I think of them as FEMALE or MALE (the sex they are in their souls). I have never looked at them and saw a male, no matter what I know of their past. I do not gender them as male, just because I knew that they were born with a penis or vagina. 
If you are reading this from the group...and I have all of you in mind when I am writing this...I want to let you know that you all are so beautiful, inside and out. I do not define you as transgendered, just as people. I know that NOBODY wants to be labeled.
I have NEVER felt more accepted in a group...
It weird, but I have never felt more out of place than in a group of artists (usually around my same age).
But the Wed. group has been a group of people that I can confide in because of their level of understand of what it feels like to be rejected and shunned by others.
Love all of you!