Why do we have ladies’ and men’s rooms in the first place? Can’t we all jut get along and pee together?
No. We have separate facilities because a certain modicum of modesty is required for our civilization to remain civilized.
I’ve been told that many women won’t even move their bowels when there are other women present in the rest room. What happens if transexuals are going to be there too?
And at times, some men exhibit a certain 'shyness' as well.