For transparency I am a guy, though no mention was made as to whether men could comment…
There are points for and against you being unreasonable…
What does the data show? Not what you have experienced or what friends have. But the actual number of times this happens in a year? You can only really judge whether an emotion is reasonable based on how realistic the threat is. If it is 1% that is one thing, if it is 80% that is another.
Feelings do not mean facts. I can “feel” threatened but it does not mean I AM threatened. Again. it all comes down to how realistic the fear is. There is a huge issue with confirmation bias in all areas of life. We think we are at risk and therefore any (even remote) suggestion that we are at risk is expanded in our heads.
Would it be reasonable to be fearful of people based on race, ethnicity, sexuality etc? Is there a free pass for fearing all men?
That said, it makes sense why if you have had an experience that you may be fearful. If I were attacked by someone of a specific background, then I may be wary of that group in the future. Ironically, I was attacked by a person of another race once. If I were to say “I am fearful of X type of person” I would be called racist. But it does seem okay to say “I am fearful that men will attack me”. Its rather curious and shows a complete blind spot.
It is also interesting how we think that men will just randomly attack in changing rooms. If they are going to do it they will do it in areas where there are much less cameras (not in the actual rooms but in the shop just outside the changing rooms) like parks, streets etc. Men, as a rule, don’t need to say “I am a woman” to attack women. It is a red herring really.
As a man I don’t believe most men get “turned on” by woman getting changed. It isn’t exactly something people fantasise about from my experience. I’ve got many male friends who can’t even imagine spying on women in changing rooms, they are often there to shock horror get changed! I’ve also got many female friends, none of which report that they have ever had this experience.
In short, it may be reasonable if you have experienced something unpleasant AND it is easy to generalise and see risk everywhere. And I say this a male who was sexually assaulted by a male in a bar.