Emo: The Stereotype

With the widening spread of the term 'Emo', short for emotional, it has become obvious to me that greater and greater predispositions towards stereotypical groups of people are becoming evident. Is this stereotyping helpful? Is it even accurate?
Well, answers can be heavily debated, but I think that the answer to the first one is a definite NO. Stereotyping groups of people is very harmful, and may lead to ostracisation of said group. Lets take 'Emo's' as an example.
Emo's are generally accepted as 'Emotional' people. They generally listen to screamo, post-hardcore/punk bands that have depressing lyrics. The more obvious emotional person will most probably be easily distinguished by their hair and fringe; black, slanted to one side and covering an eye. The meaning behind this is that they find it hard to show their face to the world, opting instead to hide behind their noticeable hair and fringe. Emo's are stereotypically depressed people prone to cutting their wrists and wishing themselves dead. However, this attribute can pretty much be applied, to varying degrees, to any group throughout history! It is just that it is much more in the forefront of emo culture. Does this mean that emo's are more emotionally unstable than other groups? I think not! However, if we have the predisposition that they are, and act accordingly to that disposition, then the emo culture may become very ostracised, feel oppressed and may then indeed live up to our expectation (of them being depressed), BECAUSE of our expectation. Is that what we want? Stereotyping is definitely not helpful.
Is our stereotyping accurate? Lets first see what exactly the stereotype is!
As I have touched on first, emo's are typically stereotyped as very unstable, depressed, fashion conscious people. To outsiders of the culture, it seems that they are obsessed with their style/fashion, their idols, their group, and most of all, themselves. Not that people say they are selfish as such, just that they dwell on their own emotions and introversion too much. It has come to the extent that people do not go to concerts they would otherwise go to, because "there will be too many emo's". It can also be heard quite often when discussing a concert, "Oh, there were way too many emo's there," or other such comments.
But is this an accurate depiction of the emotional culture? I'm not in a position to fully dwell on this question, but I would like to raise a few points.
In my experience with emo's, they are generally very nice, caring people. They do not live up to their stereotype of being hard to get along with. They do not come across as overly depressing, nor do they seem to not care about what you have to say. They act just like any other person would!
Although their fashion sense may seem quite extreme and/or questionable to some people, they generally do not seem to care what other people care of it, contrary to the stereotype of fashion consciousness. The 'fringe' hairstyle is more of an icon and style that as been developed. Indeed, it is a way of identifying this culture, as much as boots and akubra hats depicts a rough, country culture.
The many other aspects of this stereotype could be analysed similarly, and I would not be surprised if many of them proved to be false. This analysis could also be placed on any kind of people group, and again, I would not be surprised if some stereotypes proved to be wrong, at least in some way.
Please note that I am far from an expert, that this is just my humble opinion with (I think) a fair point. Please consider what I have detailed, and if you feel the need, comment.