To the men here, would you be embarrassed walking in to a toilet and seeing someone using one, or wouldn't you even think about it? Seems such a primitive idea when toilets are available alongside.
Urinals were here long before I was born. A perfectly normal environment to do one's business. The cubicles are for the paperwork. As a little ditty above the Gents urinals in the old Marylebone Magistrate's Court once dictated. "You don't stand here to chat and scoff.Have your wee and then .... off"
Prudie, feminists often used to protest that the men's room was where all the real company affairs were discussed and arranged, out of the hearing of women.
We on the other hand discuss EVERYTHING about men whilst in the loo huddle together. I know far more about lots of men that I ever wanted to thanks to bathroom chat :)