I'll be totally honest on this topic:
I have a problem enjoying female musicians in Metal and Rock. I can live with female singers in Blues, but it feels strange as soon as they play guitar or even worse, the drums. The more jazzy and classical it gets, the more I enjoy female instrumentalists and singers. Especially in classical guitar and opera singing I don't feel that "looks and feels strange" barrier. ...and before you start dissing me here - no I absolutely do not have a problem with women :-)