I’ve sort of been forced over to Mac (not that it’s a bad thing, just a thing), and Paint.NET is perhaps my biggest loss in that transition. I’ve loved that program since its early days, and is always one of my first installs on any new Windows installation.
This is my mantra. Maintainability is king. I can’t convince anyone designing our systems that this is more important than fancy 3rd party libraries that add some capability that only a couple of people will ever understand how to use, but will find it’s way throughout the codebase and be a thorn in the side of bug fixes and new features for years.