Have you noticed that women tend to be the "Cardio Queens" of exercise. Walk into any gym and there's a clear split, men are in the weight room and women are on the treadmills, ellipticals and bikes. Women typically don't like to do strength training for a few reasons.
1. They don't want to "bulk up" or look like a man
2. They don't know what to do with weights because no one ever showed them how. Sad but true.
3. Weight rooms, weight machines and free weights can be very intimidating.