i'm definitely a ?? at heart. i'd use the note, but not really for personal gain. most likely to achieve the ends Yagami Light worked for.
not to stray from the original topic, but i don't believe Light was inconsiderate or heartless at some others have said. in order to make changes, you have to cross the line between what's "good" and "bad". Light was a good person, he just didn't hesitate to do what he needed to do.
honestly, i wish the Death Note ending might have been different. i'd have liked to see Light's perfect world.