Earlier quoted context omitted.
Obviously there is a strong habit of having signs on toilets. But I am unsure why. Sitting toilets are the exact same thing for both genders, there's no reason not to have a bin next to them anyway… Most homes don't have gendered toilets. Why is that so common at work? Why do you think the separation was made?
Three big causes: First, home bathrooms are reliably single-user. Some people are deeply uncomfortable with the idea of sharing a bathroom with people of another gender (though exactly which people they would not want to share with is a complicated question). Interestingly, this seems to be a bigger deal in the US, where our stalls are shoddy and easy to see into. Second, cleanliness. Mostly, home bathrooms stay clea…
It definitely is when you have very few elements to chose from.
When the 'men's' one-ey is 'in use' in Starbucks, I often go into the 'women's' - and it's very consistently cleaner.
It is what it is.