From years of experience working in mental health, people pretty much have an “average” mood set (mostly) independently from their life situation. There are lots of people who are really ok when bad things happen in their lives, and lots of people who are dour or sad about things even when they’re fine. Ultimately, lots of people don’t need any “sips of reality to be miserable,” they’ve just decided to be miserable regardless. Obviously all of this is serious generalization and is not universally applicable.