What I don't understand is why it's not obvious to some people that if 95% of people use a particular OS, 95% of the viruses, spyware, etc will be for that OS. The OS itself has little to do with it, the biggest factor is the users themselves, both in number and habbits. A secure OS can be made insecure by sloppy usage, an insecure OS can be made reasonably secure with diligence. As always there's a tradeoff between convenience/usability and security. A bank vault door with a time lock as the only entrance to a house would be very secure, but how long would it take for the typical user to prop it open in the name of convenience?