To be honest I have no problem with an adult man pretending that he's a woman or vice versa.
Rock on dudes.
What will never be accepted:
Men pretending to be women competing in sports against actual women.
Telling minors that they can be the opposite sex and then giving them life altering drugs and/or performing irreversible surgery.
Demanding that I must affirm the delusions of anything about the transgender movement other than your freedom to live in this pretend world as an adult if you so choose.