QM- "Locally, there is a breast-feeding support group/club where mothers and babies can meet informally to discuss the problems and/or delights of the process and receive 'hands-on' training in how to carry it out effectively.
Is there any good reason why I - an adult male - should have an application to join forbidden? I'm sure it would be, so, I can't see how MEN'S clubs should be obliged to have WOMEN members."
I don't think your analogy holds in this instance.
Breastfeeding is exclusively female because nature makes it so - there is no reason why a man would gain anything from joining a support group for a task in which he is incapable of taking part - although in these enlightened times, i would not agree that this is of itself a reason for exclusion.
However, in the case of WMC's, the notion that men needed to 'get away' from their wives, and women in general, and simply relax among their 'own kind' is seriously outdated, and that is why equality guidelines exist.
I think its a shame that such levels of stubborness have deprived everyone of social facilities - but it does underline the mindset of the gentlemen in question.
That said, in the wider context, drinking habbits have changed within the last generation, and people no longer drink as a social activity - they drink to be drunk as quickly and cheaply as possible, so the days of all WMC's - those that admit women included, are certainly numbered.
It's a shame, but time does move on.