I think it's more to do with the music than the gear. Most women I know are casual listeners - they'll typically listen to whatever's currently mainstream pop, they'll have a few favourite artists, they'll own a few CDs and occasionally buy more, but their appreciation stops way short of that of most men. How many women do you know whose CD/vinyl or digital collection approaches anywhere near that of the men you know...?
It's a pity really, because the only time I can listen without feeling like I'm stealing time from my wife and son is in the evening after they've gone to sleep.