I agree and don't agree with what you have said. To me, Emo describes how a person dresses, not how they act. Pretty much EVERY so called emo is teh same, all happy and bright but dress like that. Most do it for fashion though.
And does it matter if you haven't seen people wearing skirts and dresses? As you said, let people be themselves and choose their own style. Girls don't have to be girly. In fact, it shouldn't be called girly in my opinion because that basically is saying that girls are meant to be that way.
And tattoos do look good. Doing it for fashion or because your drunk or whatever is not a good reason, but there are tattoos that are there for art, and ARE art, tattoos that symbolise who people are, and moments that they want immortalised on their skin, a memory to lost family and such. My mum is nearly 50, and still getting tattoos. And you know what? THEY LOOK GOOD ON HER. She also is covered in peircings, and once again, they look good on her. What is truly unfortunate is that my mum is no longer considered individual because pretty much everyone has decided tats and peircings look like fun, so she looks like part of teh crowd now. People at her work (She is a nurse) assume she likes bikie gang stuff simply because she has tats. Tattoos do not make a bikie.