yes, by virtue, metal is testosterone driven, and although women possess a bit of it, its nowhere near enough to have the presence of males, in terms of vocals, instruments and energy. Women are inferior to men when it comes to metal. the odd girl groups or female musician are, more times than not, a total schtick, made to attract new audiences and appeal more to women. REAL female metalheads will tell u the same, men are the only ones who can make true metal. sorry. sad but true, just like only women can be Alicia Keys or Lauren Hill, to have that emotional soul and tenderness that is inherently female by nature. One of my best friends is a female metalhead and we've had many heated debates over the years and she has begrudgingly accepted that fact. women are too scared to be ugly, and that is metal.