OB1
Jedi Master
I'd say your own or other's success leading you to be inspired to do better today is a wonderful narrative tool, and works well in simulation as well. Think of a sports team being inspired by a great play, leading to a swing in momentum. And I think humans waking up with inspiration is a beautiful way to simulate the optimistic and ambitious nature of our speciesAdditionally, a lot of people didn't use it because it so metagamey and breaks the simulation. It was fine if you were playing a slightly narrativist tinged D&D using the personality and flaw system to grant inspiration. The changes to now having it generate off racial features and die rolls ruins inspiration for narrativist play as well since they will probably be receiving far more inspiration to use and to share (which is now given freely between players with no inside the fiction narration to accompany it).
Inspiration should be an optional rule at best, in the DMG, with no typing it to die rolls, class or racial features. As instituted in 2014 D&D it didn't play well with a lot of established playstyles and in 2024 D&D the new mechanics totally trashed the one playstyle it did work in.
Most of my commentary in the survey was around this issue as well.
Also, the old rules (at this time) for giving out inspiration based on being yourself (following your flaws, bonds and ideals) still is in play, and works just fine with the new system on top of it.