I use Ubuntu for everything I do with a computer. I do dual-boot Windows on my desktop box, strictly for the games that won't run under wine. I, this week, had to reinstall Windows after it hosed itself (grrrr) and reinstalled Steam games; fewer these days, since Steam for Linux came out. I just wish I could convince more people I know of the superiority of GNU/Linux, but when I help a friend who has bought a new computer with Windows 8, I install LibreOffice and GIMP, just to show how good OSS projects can be.