The BSD OSes are often overlooked as a desktop platform despite being very easy to run and configure. They have excellent built-in documentation that the rest of the community could take inspiration from. They are a complete OS built and maintained together, rather than a distribution of disparate software from various sources bundled around a kernel. Even this reason alone is enough to make them very cohesive, and easy to understand. Their default installations are minimal (perhaps even to a fault in some users' eyes) allowing you to be clearly aware of the software that gets installed. Managing and configuring services is, IMO, far easier than on Linux (depending on distribution).
This introduction to OpenBSD is a good video to watch get a bit of an idea of it: https://www.youtube.com/watch?v=EkDVKthufAM
I understand that it's not for everyone, but I thought it's worth mentioning in case you hadn't looked at this family of OSes before, since I think they offer a huge amount of what Linux offers, but in a more cohesively-structured and simplified way. I'm definitely gradually becoming more invested myself (though still testing the waters hehe).