Look who has another opinion =].
I agree with this, i know people who use those two bands as a excuse just because of guitar hero and yes it makes me mad as well.
Everyone has a different taste. Your not stepping out of line when you post a comment on a forum, its simple your opinion on the subject, like i am doing now.
1. I agree with the first comment on disturbed.
2. Metal definition is fine as is, what you said Medical aid? Brain damage? Metal is more then these things its only what people who don't understand and listen to this music don't understand how good it is.
3. I disagree with the state of you saying another music has no emotion. Yes metal has lots in it (all you need to do is read the lyrics) but other artist still bring emotion in when they create/sing a song.