@RainbowBridge67
"Because I don't identify as a "man" or a "male", and I do not see how segregation itself is anything but another aspect of societal gender norms imposed on a "sex-based" basis, to which I refuse to conform."
You honestly see no other purpose for single sex spaces other than societal norms?
Even though there are multiple examples just in this one thread of people giving valid reasons why women are uncomfortable with having men there. That's just in this thread, there have been many many discussions on a variety of different platforms where this has been made clear.
Just to summarise a few for you.
A woman or girl who has been repeatedly beaten by a man and has had to abandon everything she owns to flee to a hostel should be able to specify a female only space. It is reasonable that men, any men would make her feel uncomfortable.
A woman or girl who has been sexually attacked/raped by a man should be able to attend a rape survivors support group without having any men present.
A woman or girl should be able to get changed in a female changing room, confident in the knowledge that no men will see her naked body without her consent
A woman or girl requiring intimate health care should be able to specify that that care is delivered by another woman or girl
A woman or girl who is devoted to a religion that requires that to maintain modesty in front of men should not be forced to choose to either not do an activity or unwillingly break that modesty because a man has decided their feeling are more important.
What kind of person would deliberately do something to cause other people pain, humiliation or distress?