Not so much a puzzle; just most women have the right idea and are better at it than us men.
In my experience, most women stay well away from these poster forums etc.
One of the biggest collectors I know is a woman and she won't go near online forums for various reasons.
So there you go, Rosa, girl power 
In my very limited experience, aside from "girly" collectables such as handbags, shoes and twee china nick-nacks, the majority of collectors that I've encountered have been male. It might be something to do with the so-called "male brain" or the fact that conditions like autism, with its emphasis on order and so forth, tend to be more prevalent in men, but that's speculation.
Also, as a lady, I've been put off forums and fairs for the simple reason that these tend to be very male-dominated spaces. When I was working in another collecting-based industry as a specialist, people often thought that I was there as the wife of one of the specialists or as a secretary, so they'd talk down to me as though I knew nothing, which can be quite discouraging. The result is that male-spaces become even more male over time, and then all the men stand around wondering why there aren't any women!
Gents, please remember that if a woman seems sensitive or quick to anger, it's probably because you're the 1000th instance of light misogyny that she's had to deal with today and she may have reached her tipping point. The straw that broke the feminist's back, if you will.
