well, you all know that I am full on geek.
I use Ubuntu on my main machine and my kids machines and I have a few customers that also use Ubuntu.
I also have loads of old computers that I rebuild give away/sell to anyone that asks, I mainly use Ubuntu but a few weeks ago a friend asked for "any version of windows" on a machine due to a program that her work uses. You can't believe that hassle just to get a computer working, product keys, licences,activation, approved hardware and the updates! oh my god the updates!

then surf the web to find the software like the anti-virus and anti-spyware, then update them. Then install a browser that works, then word processor suite, something to play music with that don't crash the machine when you try to play a mp3 without DRM, a PDF reader that doesn't freeze or load a million plugins while loading a simple PDF and then update that. (Adobe reader, same program for 10 years, updates daily ? WTF?

)
yet, with the same hardware, bung a Ubuntu CD in, answer 7 simple questions about the machine (my kids can do this since they where 6 years old) sit back, one reboot later and you have a machine that is fully working with everything installed.
I find Microsoft windows a waste of time and effort.
::end of rant