Everyone is different, but... I do have to say I'm not a big fan of girls who are into hardcore tattoo's and piercings... I mean, a few is fine, but once it get's to a certain point, I personally just feel like it shows a lack of respect for themselves and their bodies... and really, it's cool that a girl can stand the pain of tattoos and piercings too... I just think there's a difference between a girl who get's a few tattoos or piercings because she wants to, and a girl who has a ton just to prove she can withstand the pain... I don't like the idea of a woman trying so hard to be tough and masculine. Just dressing alternatively in general though, yeah, I find that really attractive.
For me they are infinitely more intriguing than other girls who are simply by-products of the garbage being proliferated by the media. I feel they offer more on a number of levels and would have a number of interests which may correspond with my own; and, as far as I can ascertain, would be better educated and be enjoyable to engage with conversation in.
there is a movie called SLC punk which talks about the style of punk and the independance and rebellion associated with punk culture in the 70s-80s. at the end however, a character brings to light that specific styles aren't particularly creative on their own and refers to punk culture with their storebought blue colour hair dye as not a sign of rebellion but as more a sign of conformity. true rebellion and style comes from within. that being said there is a very big similarity between that style and that of the emo style. although I'm not dissing emo or punk culture I'm merely saying that when I see emo or scene girls they may look sometimes pretty hot but they give off a sense of immaturity and lack of originality and it kind of puts me off of them.
that being said I've seen girls with piercings and tattoos that complement their style very well. but its more the fact that some girls just look unique. and being unique is verry sexy