Why do a lot of people ridicule Black girls for not wanting to date other races?

I notice where I live that some people do this, my White and Asian friends who are girls date other races of men and don't mind it. For me I think America has too many problems with race, I only like men who are more like me. It doesn't mean other races of men are worse, or that I couldn't date inter racially if I wanted to, but I feel that those other races of men are often too prejudice and even if they like me they most likely harbor some feelings of superiority over my own race. This doesn't mean I think all Black men are perfect either, it just means that I find it easier to be with a Black man because he isn't going to dislike my own people. My boyfriend is Black now, and I love him. Other Black women I know are the same way though, Black men are just easier because we don't really trust other races of men in America, especially not White men in America. Why do people ridicule us for this? Some say we/I am racist, its not racist though.