Most Helpful Girl
Metal heads aren't exactly unappealing but they're severely misunderstood. I am a metal head and often times I get asked if I worship Satan, kill people etc. I was even asked once if I was in a gang! A GANG! I am a 5'3 little 100 pound little white girl.
Yes there is a sub genre of metal specifically for the Devil and shit, literally called Satanic Metal, but that's all. These women who state things such as "I bet you do *insert illegal/immoral act here* too", those are women who're generally very uneducated whenever it comes to something that isn't Rap music and starbucks and bad fashion taste.
The women who say shit like that are women you shouldn't be concerning yourself with. I'm a metalhead, but I'm not gonna stereotype someone because of the music they listen to. If you can find a girl into metal, be careful because there's only 2 options. 1. They're bitchy and scary or 2. theyre sweet and innocent. A rare 3rd option is they're a mixture of both (such as moi haha)
Most Helpful Guy
I know some girls who are "metalheads." Well, at the very least they like metal music. Many people who enjoy metal music don't fit the stereotype and look of a metalhead though. Likewise, many people who like metalheads are not into metal.
So I guess you can't really figure out someone's music tastes based off the way they look.
As for the reaction, the more radical stuff you listen, the less people will also listen to it. Metal is seen as very extreme to some people and even others associate it with satanism/profanity (ironically rap has more curse words)/extremity/violence. I don't think it is the fault of girls though, since som guys hold that view. It has mainly to do with simply the personal preferences.
It's like if I told a traditional metal fan that Attila is the heaviest and best metal band and Pantera with "Walk" is weak and awful. They'd probably stare at me and slap me or give me a "wtf is wrong with you look."