It's hard not to insult Three Days Grace. They are, simply put, one of the worst bands that are currently popular. Sorry, but there's no way around that simple, irrefutable truth.
They have a mediocre guitarist who fails to impress on many levels, and has yet to convey any emotion in anything I've heard him play with the exception of one song, their singer sings about ridiculously silly things that make scene kids that listen to mainstream radio feel cool and angsty to compensate for listening to rap, and I don't remember the bassist or drummer impressing me either.*