I don't particuarly enjoy using them either (for me, it's not knowing what that person has left behind on the seat, or the floor, or what ever), I don't think it's an anxiety for me as such, just a dislike

on the subject of restrooms though, I wonder if anyone has the issue of not being able to use the restroom at another person's house. that's one of my issues, it's like, my body all ready knows that it has to hold until I get back