[MENTION=7585]Kean[/MENTION]
Because being a man is not what makes Hamlet well, Hamlet. His identity is not based on gender or skin color. Buffy's is. I don't think that a man could portray Buffy because the challenges Buffy faces are very much tied to her gender ( while Hamlet's are universal ) just like her identity is tied to her being a white woman. If you're not a white woman you can't struggle against the stereotype of a dumb blonde nor a valley girl. An Asian actress, for example, playing Buffy is like an Asian actor playing the lead of a Blaxploitation movie. Sure, you could try but WHY? It's ridiculous.
The main idea for Buffy was to subvert the idea of the girl going into the dark alley and getting killed. Yes, blonde was mentioned but the idea was to subvert the idea of a girl being inherently vulnerable, not her being "dumb" or superficial. Even if the crucial element of Buffy was that she was a "Valley Girl" there is no reason why she still couldn't be a woman of colour. Suggesting only white woman could be "Valley Girls" is falling into similar line of stereotyping that Buffy was trying to subvert. There's probably more but off the top of my head I can think of three black characters from the early 90s that were "Valley Girls": Lisa Turtle in Saved by the Bell, Dionne from Clueless and Hilary Banks from The Fresh Prince of Bel Air. If Buffy's socio-economic and social background are core to who her character is (and I don't think they are) there is no reason why she should be white by default.
AnthonyCordova
completely agree. I have no interest whatsoever in a reboot, but I completely agree