wah , really ? 98% of the world's computer are Windows based ? Then where to put UNIX-based ? Linux-based? BSD-based? Mac ? huhu
thats not included yet OS in mainframe ? SuperComputer ? workstation ? desktop ?
confused with that figure ,dude
for your information , ppl whom created OS other than Windows is not only for money, money and money ,dude
they do it for mankind and it have continuous on-going research and development , they want something more kick than windows .
People have choice to switch to Mac, Linux, UnIX or or any closed-source OS (i think the only closed-source OS in this world = Windows)
Security are already embedded in all OS , but user/sysadmin should play their role to secure it ...
regarding what u said as "marketing gimmick" , IMHO , Apple already have their own strategic plan to make their product as casual ...not being nerdie or daddy-o ...
I respect what MS do with their own market advertisement , and so do Apple .
But what to do..i'm already switched

The 98% is really true. I probably used the wrong word by saying Windows based. But certainly is not that far off the mark when users with Windows as their other OS is included in the score.