But it's not just about security (Score 1, Offtopic)

Linux has much, much more to offer users than superior security to Windows. Having switched my desktop machine over to Linux several months ago, here are the differences I noticed the most:

• Speed. Linux does more with less. On my Athlon XP 1500+, Windows XP lags noticibly on many operations, but there are virtually zero delays using Linux.
• Usability. I'll take open source desktop tools any day over the Windows equivalent. The GNOME desktop is better than that of Windows, BeOS, KDE, and NeXT combined. It is designed by people who actually know what the users need from a desktop, rather than people intent on writing a desktop that integrates Passport and spyware into every single applet.
• Web browsing. Mozilla 0.9.7 is so compatible, reliable, and quick that I have uninstalled IE on all of my 80 Windows clients' machines and replaced it with Mozilla. The users loved the tabbed browsing and have probably never even looked back.
• Accessibility. Linux supports such accessibility features as sticky modifier keys, text to speech support (even for images, using OCR), and many other things that make life easier for users with disabilities. Windows has limited support, at best, for these things.
• Standardization. Linux supports all of the latest standards that Microsoft flouts. It supports open document formats, open web page formats, and many other encodings that are not patented or non-free. Truly Linux sets the bar for other OSes to live up to.

Given these many reasons, it is hard to imagine that Windows will be able to offer more to the desktop user than Windows anytime soon.

-all dead homiez