A man with muscles and a beard will not use a woman's restroom. Transgender to females do not use woman's restroom until they appear to be "female". The last thing they want is public attention.  I have used woman's restrooms and being a master swimmer, many female locker rooms. I see who uses the facilities. The most threats to me in a female bathroom? Some of the most disgusting toilet facilities on the planet are public restrooms. Some so bad even is supposed "nice" places I take one peak in the door and will not use them.