It was silly, but it was fun to watch!

I mean yeah, the story was dumb, the science was non-existent, and the dialog between characters was laughable even when serious, but man if that scene of Los Angeles falling apart wasn't spectacular...

But yeah, it was about as well written as Transformers: Revenge of the Fallen, so if a good plot and decent characters are integral to your enjoyment of a movie, I wouldn't see it!