Grass was a supreme example of everything wrong with this nation and that's not even mentioning his repulsive, monotonous style of writing.
If you're planning to read a modern German novel, avoid this guy at all cost. Read Handke or Jelinek, Glavinic or Kracht, Gernhard or Böll. Or any of a million others. Don't let anyone sell you the Tin Drum, please.
If you want to read modern German literature there are a lot of other authors: Goetz, Tellkamp, Kehlmann, Müller, ...
Actually 'Die Blechtrommel' is great German literature. Highly recommended.
> Grass was a supreme example of everything wrong with this nation
Definitely not. Grass had his problems, but he a lot of good sides, too. It's not black or white.
> As a German, I cannot begin to explain how much I despised the guy's work and public persona.
Really? How sad.
Movies generally do little justice to the books upon which they are based, and probably in the case of The Tin Drum, that might have been a plus.
Nevertheless, when I have a chance to watch a German language movie - and to be fair, it's stuff you find on Netflix - The Tin Drum sets the standard.