I used to follow the bleach manga and still sometimes look up the most recent chapter to see how far its gone downhill and oh dear god, the last one is a doozy, Ichigo was always a bit of a Garry-Stu but now hes half Shinigami and half Quincy. Not reading that shit ever again.
Death Note was pretty good but i have 2 problems with it.
1) The writers tried to make not just 1 but 2 characters that were vastly more intelligent than themselves.
2)It went on for too long, it should have ended...where it should have ended, maybe 1 more episode to tie up loose ends or something.

but fans and money, Meh.