A Lack Of All Girl Bands

As i go about the task of picking the 500 top songs to go on my whizzy new Mp3 player, i noticed two things with the first being i do seem to favour songs pre-2000 and that i have a serious lack of all female bands on my slowly dwindling list.   
The Bangles and The Donnas are the sole representatives left standing so either it's me or there are a lack of good all female bands.
I saw a Behind the Music VH1 show once about The Bangles which suggested the rest of them got fed up with Susannah Hoffs getting drooled over and considering some of the other all female bands, jealousy does seem to be contributing factor of why they seem to implode.
Pondering on it some more, i reached the further conclusion that the all girl bands who reach the top, think Sugarbabes, Spice Girls, Girls Aloud, Mis-Teeq, Destiny's Child, All Saints etc don't play any instruments which means that unlike in a band which has the standard hierarchy of singer, guitarists and drummer, they all share the same spotlight whereas in a band the singer invariably gets all the attention.
Working this through, in most cases one member gains more attention than the others so Spice Girls it was Geri, Girls Aloud it was Cheryl Cole, All Saints Shaznay Lewis, in Mis-Teeq Alesha Dixon took the attention, Beyonce in Destiny's Child and so on so although they are all doing the same thing, one gaining more attention (and even being more prominently featured in magazines) is probably always going to cause friction.
As this is all based on one VH1 episode about The Bangles i could be completely wrong but Susannah Hoffs getting all the limelight seemed to be the cause of their split but as they played instruments and were a proper 'band', they stayed together by tolerating it a long longer then all the just singers bands whose members assume they have a chance of making it as a solo artist whereas the drummer and bass player of most bands, not quite so much.