Kiri Tunks emphasises male violence and the whole issue of safety from violence in women's spaces, and of course this is a serious & valid concern; especially for those working with vulnerable women and children; however, I do think the 'male violence issue' can get over-emphasised and make it sound as if this is the only issue, when of course it is not the only issue ( as far as I can see); and it can end up sounding somewhat alarmist, and therfore easy to refute, dismiss or question.
I know I keep going on about this - but for most women and girls, in most situations, the issue is one of privacy and dignity - and the need & rights to single sex spaces on account of these needs.
Jane Fae suggested that "women's spaces are social spaces". No, they are not social spaces, as such, other than the fact they exist in society. What they are is spaces designated on the basis of biological sex - and the reason they are necessary is because women and girls have certain vulnerabilities on account of these physical and biological differences.