Because like my wife, who completely supports my addiction, most women think it is amusingly silly how we grown men spend so much time obsessing over what is basically a children's game. And have no interest themselves. So as noted above, the ratio of women who are serious players is pretty small. In our league, the few women tend to be wives or girlfriends who play just to spend time with their pinball obsessed men. Not all of them, but I would say most. Just like when I go shopping with my wife.