Hands down MacOS. I actually started off with Windows. Enjoyed Windows XP when it was all the hype. Then came Vista, and I made the jump to MacOS, and never looked back. These days I only use Windows 10 for work purposes, even then, I run a Virtual Machine with Ubuntu Installed.
So I have to say, Unix & Linux are the winners, both in stability and ease of use and configuration.
Windows is sad garbage that gets the upper hand due to corporate use and gaming...