Even I have given some pop punk a try and some of them, if they play to their cheese factor and make it entertaining like Bowling for Soup or something like that, then I can get into them.
Good Charlotte is like every annoying habit or attitude of today's youth all rolled into one. Now if it were supposed to be a parody of today's youth then maybe I'd understand, but sadly they seem to be serious.
Sum 41 I used to hate because of the whole "anti-conformity" attitude that is so idiotic, but they really showed me something at the Metallica Icon concert and I atleast think they have some talent that could be harnessed if they ever grow up a little and move away from the dumb kid attitude.