This ain't the first virus on a Mac OS, and it certainly won't be the last. Your "Windows Experience" is on it's way.
Not quite. What hasn't been pointed out is that this is NOT a virus, it's a trojan horse. To be infected you have to go to a suitably infected website, be asked to 'update' or download the Flash plug-in, accept that request, ignoring the fact that you haven't gone to the Adobe website, and download and install the plug-in, ENTERING YOUR SYSTEM PASSWORD to do so.
You are quite right, there always have been Mac 'viruses' and there will be more, but the Mac is still by miles the safest way to connect to the internet, and probably always will be.
The next major MacOS system update (OSX 10.8) will make life even harder for the hackers...
Gatekeeper