My god, the idiocy in this thread.
So you encounter a person who, for whatever reason, feels they identify as the opposite biological gender. Maybe a chromosome went wonky, maybe it's Satan, maybe some neurons are misfiring. Bottom line, they don't feel like they fit in, and it causes considerable trauma in their lives, to the point where maybe they consider suicide. They address said issue with hormone treatments, maybe surgery, and WALLA, they're walking around as the other sex now and finally feel some semblance of "normal".
OMG, you have to refer to this person with a new pronoun?! OMG, does this mean we redefine how genders are defined?! OMG, they don't cover this in the Bible, so I'd better err on the side of hating them just in case!
Why do you insist on taking a stand against this poor individual? I can remember feeling like I was going to throw up because my mom couldn't afford to buy me expensive clothes, $100 sneakers and ski trips like all the rich kids' parents. Could you begin to imagine what a transgender teen must go through?
If saying "she" instead of "he" might offer this person some small comfort in their otherwise confusing and tormented life, do ya think maybe you could find it within yourself to do so? On a very basic human compassionate level, is that really a difficult concession for you to make?