Linux is the primary operating system on my dual-boot system. I use it for a few reasons. The primary reason being its superior stability. For now I use windows only for games and to install new hardware (to make sure its working). There is a misconception that there isn't a lot of software for Linux. Whenever software is needed people just code it. I'll discuss software later.

If you are considering installing linux on your computer, I would recommend the Mandrake 7.2 distribution. Redhat is popular as the Os for servers, but Mandrake is much better on desktop PC's.

Here are sample screenshots of my desktop.
Screenshot 1
Screenshot 2