It would be interesting to compare how much time is spent patching each OS. For home users, the time would be very close to 0 since this all happens automatically.
For corporate users, things get more complicated because Linux patches kind of stream in on a daily basis while OS X patches tend to build and build and build and then get dumped on the user in huge mega patches. Also interesting is how easy / complicated it is to push patches out to enterprise desktops on various OSs. In enterprise settings, you usually don't want to set the desktops to patch themselves so tools for pushing patches becomes incredibly important.
Or did you just want to make the point that only Windows has patches? Sorry if my non zealot post rained on your anti-MS parade.
