I think all of these reasons are pretty weak. What I do know is that it creates a uniquely horrible situation for people who are transgender/transitioning. I ad

I think all of these reasons are pretty weak. What I do know is that it creates a uniquely horrible situation for people who are transgender/transitioning. I admit that periods are the closest thing to a biological reason to have differences in bathroom facilities, but mostly I think that it's a holdover of 19th century sexism.