Ask HN: What OS are you running on your Macbook and why?

windows 10, runs faster than macOS and now it is better for development than macOS itself and I could do a load of things much better and faster in w10 so I don't really see the point in using macOS.

Mostly OSX. Seriously thinking about ditching the thing and going and getting a Dell XPS 13 Developer Edition, though.

Windows 10 under bootcamp as I do a lot of development for Windows. Strangely Win 10 runs faster on my mac than OSX El Capitan.

OS X because I don't get paid to futz with my OS to get it working right.

But, most of the time I also have a Linux VM image running to give me a closer production like environment.