I use Windows because I have a Surface with Win10 preinstalled and it does a very good job for me and I think there are more Programs and Games for Windows than any other operating system.
I assume you use the console a lot? I know Apple's has one similar to Linux and both are very good. Also Windows got better but their PowerShell is not that good yet. Console is really awesome for scientific stuff or a server so I can understand anybody who uses Linux too.