Why isn't there more Female Metal?

For those metal fans out there, you know how hard it is to find a metal band with female fronted vocal's. It seems that girls didn't want to jump on board when metal was rising though the 80's and 90's. But now as we roll into another decade, a few females have joined the metal revolution. But my question is why are there not more?

If you went back in time and ask for female fronted metal bands, people would think you where insane. But now in 2010, the decade of shaking things up, you think it would have catch on faster. Out of all the metal bands out there, about 2% of them is lead by a female singer. Now that is pretty small compare to Pop, Country, and Alternative female singer ratios.

Kittie, the only well knowen all female metal band

You'll find most female metal in the power symphonic metal genre. Most often Opera style is used.  But groups like Kittie, have shown that female vocals can make a good fit for heavy metal. Lucuna Coil uses female vocals in a Alternative metal style. I like the bands that use a mix of clean vocals and screams together. When done right, it can create a pretty awesome song. I would really like to see Female vocals in other less done genres like Thrash, Groove and Hair style.

Maybe girls avoid the metal genre because its to dark and scary. But I think metal is just another art form that any person can enjoy. There are quite a bit of female fans of metal, but the group is quite small when compared to the male fans. More people (females) should look into starting a metal band, it may not be the best paying gig in the world. But hey, you'll have a loyal fan base if your good (including me) and have a good time screaming. 

If you think about the guys that do Pop like music, then there are no excuses. Besides, you'll be surprised by how well female vocals and heavy guitars sound together.