Honestly, because Windows is a steaming pile of garbage and using Mac feels like swimming with pool floaties.
I recently started using NixOS as my distro and it has been phenomenal. Saying the learning curve is a little steep is like calling a hurricane a little bit of rain, but once you start to get it, it’s extremely powerful and delivers on the promise of “all of your configuration in one place.” It gives me a lot of peace of mind to know that every time I tweak or fix something, it’s reliably making it into a version controlled and backed up repository. I could throw my laptop out the window, pick up a new one, and have all my applications installed and configured within half an hour.