One of the reasons why I built a hackintosh was so I could have Mac OS for work then boot into Windows and play games. For me, Mac OS has always been about work; it's the OS of choice for the designers I worked with and the de facto OS in publishing. It was a big deal in the days before Macs had Intel processors, but not so much anymore. To be honest, Mac OS just feels more familiar, so I'm sticking with it. But when it comes to games, you really need Windows. There's no way around it. Windows is best for gaming. Most of my Steam games live there too.