Freedom from Windows!
I am an opensource fanatic, and I hate Windows.
For so long a time already, I have been wanting to port my Windows hard drive to a Linux OS.. I just haven't had the guts to do so. Since the time I was working, I always used Linux. I have tried Redhat, Mandrake (now known as Mandriva), SuSe, CentOS, Debian, and Sun Solaris. I loved them all. I've always felt that it fitted my workaholic nature. Just seeing the PC in Linux OS gave me the silent command of work. Ergo, I always sat down infront of my Linux den and started working right away. It gave me the feeling that I will never waste a second when I work in Linux environment, unlike in Windows.
I have always felt that Windows OS provided me with so much distraction that I cannot work. The IMs have been introduced, notifiers sitting on your tray, too many desktop distractions! And I find myself always monitoring processes, most of the time, afraid that I had too many of them where most are trivial. On top of it, I would always have to set my anti-virus to update itself automatically, afraid that my files would go unprotected.
Recently, my home PC bogged down. For some apparent reason, it might have sensed that I was nearly into frustration that I would wipe it clean and put Linux instead. Having bought a new hard drive, of course, what I had in mind was to use it as tertiary boot disk to run in Ubuntu. But, since it has paved way for a reformat, because of its jealousy, then I now had the courage to put Ubuntu as my primary OS. Never mind that my sisters would complain later on. 
after all, I have surveyed their PC use patterns, and found that they use up only most of the internet resource for Friendster, etc and YM.
I am now running Ubuntu's latest desktop OS, and so very happy because of it. 