Can you imagine a scenario where a 10 year old girl is alone in a mixed sex toilet and a man or men enter?
Does that make you feel more uncomfortable?
It does me.
Or a scenario where women start to avoid public toilets completely and every facility, everywhere, becomes the domain only of male people, and the females who don't feel vulnerable, ever?
That makes me pretty uncomfortable.
Not all toilet scenarios are busy public facilities at midday.
Sometimes being trapped in a room with a man at night, or when other people aren't around for support, can be a very frightening thing.
I'm glad you don't feel vulnerable, but many of us do, because we actually are. And I suspect you too will feel this way a some point. Perhaps not.
But think of other women, and think of girls, and ask yourself if they should empathise with you, or you with them?