The author transitioned from Windows to NixOS as their primary operating system after using it intermittently for a year or two. They have extensively used a MacBook for work while maintaining a personal machine with Windows and a dual-boot setup with Linux. Recent statistics indicate that Linux users account for 5.4% of all visitors, with Windows holding a market share of 72.13% and macOS at 15.46%. NixOS allows users to manage the entire system through a single configuration file, offering atomic changes and reliable rollbacks. It isolates each package in its own environment to avoid dependency issues. NixOS supports individual application updates without impacting the entire system, enhancing flexibility. The author notes that while major applications like Photoshop are not supported, open-source alternatives are available. The relevance of Windows is diminishing as Microsoft focuses on Azure and SaaS offerings, making Linux a more appealing option.