If I had a death note I would use it for good not evil.... No wait a minute I'm a sadistic kind of person who didn't actually like the way the story ended. So I would take off where Light left off, creating the sick dystopia he was trying to achieve. I mean it can't be much worse than the fucked up world we live in now right? All the corruption and pointless war for unwarranted gain, everyone fucks each over anyway. Why not be the bad ass mother fucker who does it all, and brings some kind of order to this pointless existence.