Today, I had the most peculiar experience. A (female, and pregnant, but that has no importance at all for this story) cousin of mine complained on Facebook about a virus infection on her Windows machine (I assume Vista, but I actually didn't bother to ask). Locked out by one of these ransom viruses. Worst part is that she did have an up-to-date antivirus sponsored by the Bank where here partner works.
I don't mind helping, but -of course- my first comment was. "Drop that crap OS and go to ubuntu.com and get a real operating system". I NEVER expected her to actually do that. Well, she jumped on the occasion. She was also very happy to hear what a live CD is and that she could recover her data from her current installation using the LiveCD and copy it to a USB disk. So, she managed to burn the ISO, boot to it, copy her data and install the whole thing. Basically without me helping except saying that it could be done. I also explained what dual booting was and she could do that.
She asked me one question: Why do you use Windows? My reply was: I don't, unless I want to play games (the non-Flash variants. I illustrated Flash games with FarmVille). The tipped her over: She'd go full Linux.
I was completely baffled... You have to imagine the frustration Windows had to put on her so that she would try something completely unknown, just because I say I use it.
First reactions were: Hey, this thing already has Firefox,,Thunderbird and an Office suite. Wow, I have four workspaces (she means virtual desktops). She found Ubuntu Cloud (5GB seems a lot to her, I wonder where else she has been?) and -while not Ubuntu specific- I explained her what Firefox Sync is. She also seemed to like the idea of the Software Store (I compared it to Apples App Store, I know not the same, but she has to understand what it is) and steered her to installing ubuntu-restricted-extras and explained it was to install Flash and similar.
Linux on the desktop... Yes, it can be done... She is non-IT, perhaps a bit geeky, but definitely non-IT.