ah, wow, I never thought about that before, but your right. (different opperating sytems are programed differently, therefore will not react the same to different viruses.) I heard Linux is not for begginners though?
actually, one of the reasons would be that Windows operating system is not a very well-written OS. There are holes all over it, thats why they give u patches every few days/weeks. The fact that its not open-source gives it a lot of disadvantage also, since you dont know how it works internally, you cant fix those holes yourself. Thats the beauty with open source, like Linux, there's always a community wherein when a problem or error comes up, that group of ppl can fix that problem sooner, if not immediately. The code would probably be better written as well.
Also, aside from being poorly written, Windows also carries with it the fun of being the most widely used OS in the world. Hackers love that. Virus /Trojan makers love that fact too and use that to their advantage. Whats the fun of attacking tech savvy ppl? (ie. most Linux users)
There are quite a few user-friendly Linux distrobutions out there actually. Like Ubuntu, Mandriva, and Fedora Core. It feels like you're using Windows, at certain times. lol. Of course, you need to get used to its filesystem and inner workings, but imo, its worth it. (and fun too )