[saberience]

You would probably feel differently if you had learned the term man and mankind also refer to all human beings and that usage had been normal and active for your entire life.

Of course saying womankind sounds funny now because we haven’t heard it used for our whole lives. The term mankind derives from Sanskrit meaning children of Manu (a god). It’s not a sexist term and we’ve gone 2000 years without people finding it offensive, it’s only one that people with no other issues in their life need something to be offended about and decide to make a war on words.