And for the record I have been using windows since 3.1 and have NEVER gotten a virus or adware, and I never installed a virus scanner. I am actually using Vista right now without any virus scanner (windows defender is activated in the background by default which I left on, but thats for spyware).
I have been a computer technician and network engineer for several years before joining the Australian Army, and you are one of the incredibly lucky ones. The amount of crap I have seen on people's computers, because they didn't update their anti virus software, OR not having one installed at all, I was amazed that Windows would still run.
The amount of viruses that I saw on machines that had the latest and up-to-date virus scanners, was enough to impair normal windows/system operations about 90% of the time. I'm not just talking spyware, I'm talking about real viruses.
Don't get me wrong, once it's setup properly, a Windows XP/2003 machine can be practically invincible. However, these invincible machines are seldomly set up correctly, and can usually only be found in large corporate data networks.
Vista is great, it has a lot of built in security features as well as a practically re-written kernel, it is incredibly strong. But in reality, this is nothing. Windows has so many vulnerable points, not just at the kernel level. The registry, the amount of services Windows calls to operate, Dynamic Link Library files - with the way Windows is put together, it is just asking for manipulation.
MacOS, based on its Unix core, is far more secure and stable than what Windows will ever be, until the Client Services Division (the guys that make Windows at Microsoft) decide to completely re-write the base system.
Pretty much, if you cut away all the NERD-ish stuff that I just said; Windows by itself is crap when compared to systems like MacOS X, Unix and a lot of Linux distributions (not all distro's are as secure and stable as others)
Just so you know, I've used Windows all my life of course until I bought my beautiful Apple MacBook Pro. I still use Windows and I will probably always continue too, but it is only for gaming and working on other peoples machines. I now use MacOS X for all of my own personal stuff.
