I still can't stop but think how stretched out the Hobbit films were, for an otherwise short book. That's a sin that stains forever with me. The Lord of the Rings films, do have their own flaws, but they're fairly contained and can be debated as to whether they were good or not. I have so much trouble excusing anything with the Hobbit though.
And I hope we never, ever see anyone tackle The Silmarillion. Simply because, there will be so much improvised fluff in that would-be film, that it'd make the Hobbit films blush.
I guess a decade of slop media where nothing is sacred and everything must be exploited has hardened my heart from caring about anything anymore. A younger me cared about why the Star Wars sequels are bad or that they cancelled Firefly too quickly or that Community fired Dan Harmon. But all these properties are just tools of corpo oppression at this point. Art doesn't have the same impact if they are just trying to squeeze every last dollar out of them.