I'm sorry you feel that way, hereIam. All I can say is that there is a lot of literature out there that explores the history of transgender people, and you are welcome to read into it. The simple fact is that transgenderism has *always* been a feature of humanity. The fact that we've come to accept it more readily now isn't a product of "right-on" thinking, more a result of better understanding of other people's experiences.
Or you can go down SK's route, and deliberately and pointedly refuse to even consider the possibility that maybe there is more to life than your own experience of it, and disparage and insult other cultures in the process.