At what point did you realize your product was good enough to stop tweaking?

I used to think every little bug or missing feature meant the app wasn't ready for actual users. Spent three months polishing animations and cleaning up code that nobody even looked at, while ignoring the fact that marketing needed way more attention. That 10% retention rate Juan mentioned is a massive signal—if people are sticking around despite the rough edges, the core problem is already solved. Have you ever delayed a launch just because you wanted a screen to look "perfect," only to find out users didn't care about those details at all?