I hated misa misa.
She was obviously a plot device to make the series longer. If she wasn't there, it probably would have ended a lot sooner.
At the end of the L arc, L pretty much had Kira pinned down. Misa and the stupid shinigami rule was the loophole the author used to get Kira out of that situation.
I still watched, (and then read) the second season, but it was nowhere as good as the first season.
The "corrupt CEO" story arc was a little stupid too.








