For me, I live a sort of double life with respect to this issue. For work, I feel most productive in Linux. For home, I absolutely cannot stand using anything

For me, I live a sort of double life with respect to this issue. For work, I feel most productive in Linux. For home, I absolutely cannot stand using anything but Mac OS X. If I worked for a company that used a Windows stack, I wouldn't have a problem working in Windows, but there's a huge difference in the end user experience depending on whether you're building a web stack or organizing a photo collection.