It may seem strange, but human beings actually have more than just two genders. In fact, physical sex isn’t as straightforward as most people think it is (1 in 1000 humans is born as “intersexed”), but gender is a far more subjective and varied thing. Some of us (me) don’t mostly fit into one single mainstream gender category (“male” or “female”) and few of us fit neatly into one category (most have at least a few traits that don’t fit into their assigned gender category – think of women you may have encountered who are very aggressive or men who are very sensitive). Well, I’m not here to argue with you – you can read and hopefully learn or you can go somewhere you believe is “safe” where people are only just men or just women.
See also my GenDissent thesis
(from 2000, my college days)