[jimbrowski]

2 reasons from my own experience: thats how they're mainly portayed in porn movies; when I was younger I never seen any African, asian, or hispanic females in porn; they were far and few between, so every movie back then had the white woman in extremely submissive roles.
The other reason is how white men talk about white women. Working around white men and having them explain or share their sexual escapades was often times shocking; granted, I don't normally hang around white men so these are working relationships and in passing, and I know that it may be some "chest thumping" & banter or making themeselves seem like they're better than what they actually are, but I've never heard a white man in my age group speak positively about his wife, or the women he's fucking on the side, or even the girlfriend.
Now, in terms of a "dominant" woman; in the bedroom I dont personally care if a female's dominant, submissive, or neutral because my aim is to have fun. If we're just in a sex relationship a females character doesn't really matter, but if we're in a monogamous reletionship in hopes of getting married then a dominant woman outsise of the bedroom presents a problem for me, and any man I would think. Not because of fear, but because of added stress in an already stressfull life!
E.g., let's say I come home from work and find out that we have a financial situation in our household, and I have more experience with financial matters; so I make the suggestion to go one way based on experience, and you decide to go another way just to exercise your "dominance", it would be a VERY short relationship! I'm not going to waste time in my life with someone who opposes me on every front for no good reason, and just because she's dominant. Life is TOOOOOOOO short, and there's TOOOO many woman that I wouldn't have to put up with that to choose from.