I can't say anything about women who don't care to masturbate, but some women have been taught that anything sex-related is bad. Including masturbation. So in some cases it's not that they don't want to, it's just that they've never tried, because "good girls don't do that."

__________________
I see your fantasy... you want to make it a reality

Are you in the mood to be subdued

You see these shackles
Baby I’m your slave
I’ll let you whip me if I misbehave

Tie me to the bedpost

I like it rough
cause I'd rather feel pain than nothing at all