Question one: If you want a rented OS, use windoze. If you want a OS that is controlled by somebody else then go ahead, use windoze. If you want a OS that you control and that you can customize to the limit of your ability, use Linux. If you don't like Linux, use windoze.
Question two: That one almost answers itself. Viruses. Almost 90% of viruses and trojans etc are for windoze. Of those that are for Linux, very very few are sucessful. A well setup Linux system is very hard to break into, not impossible, just hard to do.
I watched everybody scramble during the last virus. Ringing their hands on if they would make it through or not. I had to go show them how to reduce the risk of the virus and tell them not to open e-mail attachments. While I was there, I forwarded myself one of those viruses just to see it. No problems here.
I have a question or two for you. You ever heard of a Mac user getting hit by a virus? Linux? Do you like the stability of windoze? I have heard and read about Linux systems running for months even years without a reboot. Do that with windoze 98, 2000 or dream about with Melinium. You can install the vast majority of software without a reboot. You can't sneeze in windoze without rebooting.
What do you think now? I'm not going to tell you to switch. That is your decision to make. I LOVE Linux. I hate windoze and what M$ does to other companies that compete. I'm not saying that M$ should shut down but they should change the practices they use.
Hope you have something to think about.
Later