True, i can also get OCD'ey vibes, myself included, i think it comes with mindset one fosters when looking at a screen for long. Same thing can also happen when doing Music or Digital Art, you can fell into a perfectionism loop, where you spend an exponential amount of time on smaller and smaller tasks, that no one will ever care about.

For lots of projects writing some quick end-to-end or story based tests is sufficient, maybe with some randomisation thrown in.

I honestly think the current framework hell we're in has pushed so many hyper-complex best practices that we just waste way too much time on perfecting process over actually coding - tests being one of the paradigms that has gone overboard.

A widely used, large framework having really good code coverage is important, especially if not everyone uses all of the framework.