I'm a fan for several reasons other people could probably relate to;
well first of all, by tuning out to Three Days Grace (by random chance one day) it has not only caught my attention but after taking the time to understand their music, it has allowed me to feel understood and just vent out all (or most) of my negative emotions that were held captive in me. Not only that but i had no idea they were Christians! Not that it matters to me but, even though I'm a bit skeptic about religion and stuff...I can always put the images from their view as something else that fits in just as well 
So many fears...scars...burdens and pressure we all just need a shoulder to cry on, and that's where Three Days Grace kinda wedged into my life (and I'm grateful) and by cooping along with the songs, they have made my self confidence grow and my experience with people around me grow. "Never Too Late"...i just can't forget how many times I've listened to that, while the people I've known at the time did literally say, "i just want to end my life...plz don't stop me I just can't take it anymore", and with me saying back, "but It'll be alright! i just know it will be...trust me...! I know things don't seem good right now, but give it some time...I'll be there, then and now"
And I think that in a way, the true hardcore fans of Three Days Grace (for relating or change in life) are like the guardians who do their best to help those who have nothing to begin with, even though they're stuck in a problem of their own...it's best to swallow pride and best to cope, everyone can move on at their own pace...they just need some helpful grace.