Screamo (and emo) while not technically a genre, is a label which encompasses a lot of things, most of which are rooted in some fashion from the hardcore punk scene and having almost nothing to do with heavy metal. It's some of the best music produced by my generation and frankly if you don't like it, you are probably lame. Aside from the technical death metal scene, there's been relatively little else that's even notable to come out of gen Y. Our pop music was absolute garbage, our rock music was terribly cookie cutter crap, our hip-hop was comically abysmal, and our country the most embarrassing yet.
Of course, music is one of the most subjective things ever. Everyone has their own take on it and that's just fine. My take is your favorite band is crap, and screamo for the win.