An interesting point/thread Suzy
In this day and age we're supposed to have recognised the alleged absurdity of thinking the sexes are different, whilst ignoring the fact that we are very different in so many of our needs and ways.
We used to have, as you point out Suzy, 'male only' public bars amongst other things 'male'. These were places where blokes could go to be in the company of blokes. What could be wrong with that ?
But we decided this was all sexist tripe to much applause from lady miners, soldiers, wrestlers etc. And the women got what they wanted, at the expense of many blokes who just wanted to go to the pub and have a drink in male company and talk about male things.
And now what do we have ...? (and shockingly - are allowed by law to have!).
We have women only health clubs, wealth clubs, funeral parlours and the list goes on. And I was horrified to hear that our illustrious PM (who shall be nameless as we're not allowed to talk politics) has allocated a Minister to look after Womens Affairs

Jeepers how unfair is that?
I'm really surprised that women nowadays could possibly feel in any way disadvantaged, given the number of 'women only' services available to them. I can in all conscience say that I can't remember when I last saw a 'men only' anything - apart from the toilets that is
Edit:- .... and that theory has now been dispelled now that I've read Liz's post