It's the opposite. One is motivation from being completionist all-green checkmarks. Where checkmarks are good. I only want to see/think about errors. I don't care if it passed 100 tests or a 1000 tests successfully.

Edit: I get that logically they are the same, but that's true of a half-empty/half-full glass. Psychologically they are different.

Most test frameworks only really show you the failing tests in any detail as the top level results.

As you say, you don't care that there are 20k passing tests. You care just care that there is 1 failure.