I'm now thinking of converting my wife's PC over to Linux. This is not a trivial decision. She depends heavily on her computer for her day to day work, especially for word processing and email. Yet I'm really tired of worrying about the security issues surrounding Windows.
One good thing is that she's been using Netscape for email and most Web browsing for some time. So she wouldn't have to be retrained away from Outlook. (I once went through a deathmarch where my ISP attempted a forced migration to IE/Outlook, but that's another story.)
Properly handled, my wife might not even notice the conversion. My child would be quite upset though, when all the computer games stopped working. But that might not be such a Bad Thing either.