The fact that Bi/Multiracial people turn out different shows that one cant be called black and other white?

I'm biracial(White/black) I don't look Black to some people or White, people can tell I am mixed. I think some biracial people embrace one side over the other based on what they look like and which side accepts them more. I relate to both my white and black family and the only ridicule I get is from blacks who are ghetto and see me as some one who is not black enough, but I am accepted by both blacks and whites.