To be fair, rock music of all sorts is something you should grow out of by the time you're 18. As you don't see many 30 year old emos, but loads of aging metalheads, you have to say emo's are marginally less sad than other rock fans.
Emo's are miserable attention seekers, wallowing in self pity. Having said that, I like them - sometimes.
First we had gay cowboys in brokeback mountain, now it's Cowboy the Emo. The wild west will never be the same again.