1 & 2 By all means, if you think a mac is more secure, and that is important, go ahead. But it isn't. Once Mac gets more of the market share, or if someone decides to fuck with macs appeal, they are going to get hit, and hit hard. It is only a matter of time.
As for the quote, security, especially now, is extremely important. Too many little fuckers running around trying to hurt you in someway. Vista is much more capable of stoping it then Mac.
3. People on 98 are idiots.

If and when apple becomes a target, it wll be game over. It just doesn't have the security needed. Just like 98 doesn't. I think I am on a computer (school one) that runs 2000. Thing crashes like every 10 minutes because of how bad it is. Vista is getting rid of most of the legacy code, making it much more advanced then any OS on the market, as well as more secure.
You may not need to get the latest OS on macs, but when they come out so often, it is easy to become behind the times, whereas Windows just puts out upgrades that can be taken straight from their website.
One guy said, arguing about Mac vs. Windows is like arguing about religion. Everyone has their preference, and whatever the arguements against either, they will not change.