I have a Windows box that I use pretty much only for gaming. I'll be working from home for the next year (sabbatical), so I plan to use this machine rather than my less powerful MacBook Pro.
Windows is not suitable for actual work, so in one week I plan to install Ubuntu (dual boot).
@aebrockwell Yes -- handily, I have a fast SSD (to boot up the Windows side quickly for gaming) and a larger actual hard disk (for long work sessions on the Linux side).