Women generally have a problem with men using the women's restroom.
But will quickly use the men's room to moment it seems necessary.
Maybe it's just me, but I've never walked into the men's room. I suppose I was never that desperate. Or too uptight. I really don't want to go in the men's room.
I've seen a transgendered wo/man (not sure what to call her/him) and really struggled not to break out laughing. I felt pretty bad about finding it so funny. No one called him out on it. But I wasn't the only one trying not to laugh.
I have had a number of transgendered friends. One was truly transgendered. Drop dead gorgeous. Unless you knew her so well, that she would tell you, no one would ever know. She would be horrified to see a man in a women's rest room or dressing room. Jennifer would be the first woman to slam a high heel into the guy's head. Two others were just deranged. One was an ex-marine from the Viet Nam war who felt that becoming a woman was paying some kind of pennace for killing so many people. The other was just deranged. HE was a motorcycle mechanic who dressed as a woman, had tit implants and usually badly needed a shave. I consider those types gay cross dressers who are confused as to what the word transgendered means.
Now, though, we have a different breed of crazy. Men who want to attack women in a place where they have less chance of discovery who are taking full advantage of laws created to make it easier for them to carry out their attacks. Some stores recognize this and don't allow girls the use of the dressing rooms or rest rooms unless they have a parent with them. If a woman is vulnerable, a child is more so. The murder of the little girl in the women's rest room in Las Vegas changed everything.