As for my personal opinion on Nickelback, I have no problem with them. I never took the time to buy any of their albums, so most of their stuff I haven't actually heard. And I haven't been paying attention to mainstream music lately, so I don't know any of their most recent singles, either. But songs like Someday, How You Remind Me, Figured You Out, and Savin' Me are pretty good songs. And then songs like Animals and Rockstar - which certainly don't have much in the way of depth - are still pretty good for what they are: straight-forward fun songs.
Although, as an interesting side note, my two favorite Chad Kroeger songs are both from outside of Nickelback: Hero, with Josey Scott, from the Spiderman soundtrack, and Why Don't You & I, which is a Santana song featuring Kroeger.