Mac OS X is such a stable OS for one. Compare it to WinXP and there are dozens of good things. First of all Apple computers do not have DOS. No applications use other applications to work well on Macs. If you want to delete a program on a Mac, you just delete it. No worry about it taking a part of another program with it. Each application is a stand alone program. Usually, DOS is the base for viruses, worms etc. Since Macs have no DOS, they don't get any of the viruses that PC's do. You don't need spyware; anti virus; tracking bug software to keep your computer safe and clean. It comes to you that way and it stays that way.\n Most Mac applications are extremely simple to use, even for the first time user. The stability of the Apple Computers is solid. Plus they are sure a lot of fun to operate. It's very hard to compare OS X 10.4 to MS XP as they are as different as apples and oranges. They both are computers and that is where the similaries end.