... when I was watching the movie "Raise Your Voice". I thought small bit of a concert at the beginning was really cool but I didn't put more into it than that. Later some friends on a Danish fansite for Evanescence started talking about Three Days Grace - so I thought "I have got to hear some more of their music!"
Not so long ago, I found a song on youtube - don't remember which - and I listened to it! I was hooked! So I listened to all the songs related to the first one, and now - I'm a fan!
Firstly because of the sound! I love the heavy rock beat and Adam's rough but emotional and confidence inspirering voice! It's like - even though you may not have experienced all the things that the songs are about, you feel them deep down! *Thumbs up* to Adam for his powerful interpretation of the songs! 
Secondly, I'm a fan because I think, the lyrics are great! And i can really relate to most of it. The lyrics describes life for most people, I think, which makes them even better because it's hard to touch every aspect of life 
So all in all, I'm a fan simply because it's great music in every way! Keep it up 