What I tend to use most on my computer at the moment is Fedora 5, with win XP sitting around, taking up space in case I want to play certain games without difficulty.
I'm not one of the "GNU/Linux is perfection, windoze is a complete waste which has no good use" people, windows has it's place and uses. But it's insecurities aren't just due to it's 'popularity', it also has major faults. As I remember, large amounts of it's kernel or something is written in a old languege which cripples it in various ways. Also, the current windows OSs deal badly with multiple users, has some things designed in bad ways (your desktop files are located in something like Desktop\My Computer\C:\My Documents\_user_\desktop\, compared to things like /home/_user_/Desktop/; could also mention security and other stuff, but that will do as a quick example).
When I start booting windows, I am greeted with an image that has a little bar going from one side to the other (not much to say, really). When I boot Fedora, I see a nice little box in the middle of the screen with a bar which gradually progresses across as the booting proccess goes along, there is also a bit of text which tells me what it is working on at the moment (detecting new hardware, starting networking...), if I want to, I can click on the small triangle next to the progress line and see more detail of what is happening, I can also press a button and manually chose what is (and isn't) started (that was a long sentence...).
GNU/Linux might not be the best operating system, it might not suit everyone, it might have some problems, but at least it isn't OS2.
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;))