I see MD'ing as a extension of collecting, and collecting seems to be a combination of Hunting/prey drive and acquisitiveness. Collectors have always been men. Art, coins, stamps, books, baseball cards, matchbooks, marbles, knives, guns, beer cans, arrowheads, whatever. There are exceptions, of course, I'm sure that there are many women that collect things. Don't know any though. My gram collected Green Stamps (remember Green Stamps?), but that was as a means to an end, and not quite the same thing. Many people think that my aunt collects pig figurines, and gives them to her....and she sure wishes they would stop.
It's a guy thing, whether cultural or genetic, I won't debate that (have my own opinion, though).
Oh, and the Japanese look at you funny because they can't understand why you would want to find used stuff that you could just go out and buy. Same mindset that makes them ship their 2 year old cars over to the "poor people" in North America. It's just cultural... they'd never dream of going out and looking for stuff other people had lost or discarded, any more than they'd go out and spend the weekend at the garbage dump, unless they were actually destitute. That's my understanding, anyway.
