What they all said.
I also think that bike=machine=technical=male thing plays a role. So are cars, and women do drive, but cars are larger, messier and more expensive to repair, so not that many men spend time wrenching their own cars. But walk into a bike store and you'll find men happily discussing the minutiae of bike parts and how to wrench this or that. I guess women may feel that if they're not mechanically inclined, this isn't the sport for them. Skis are pretty straight forward, by comparison.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett