I appreciate the response, so here are some quick replies:
1. No BIOS modifications whatsoever.
2. Vista actually maintains itself - I really don't do a thing to it. It has fantastic housekeeping abilities. The average user does not need to do a thing to maintain it.
3. Mac OS does indeed have viruses (specifically, the
iChat virus comes to mind here). Obviously, if it becomes more popular, more viruses will take aim at the Mac OS. I'm sure you know this is a matter of market share, not OS security.
4. Trialware is not a Windows issue, it's a PC vendor issue. Of course, Apple builds its systems and sells the OS, however, Apple systems are generally much more costly than PCs of equal computing power.
Higher end PCs generally do not have trialware - my XPS desktop did not have any, nor did my XPS laptop. Fortunately, people can choose what they want pre-installed on higher end systems.
I believe the Apple hardware is beautiful to look at, and very few PCs can compare in this department. I also think the Mac OS is very well integrated and it does what it does very well. Windows is different, though it accomplishes the same thing. All industry-standard applications (Photoshop, etc.) perform so closely, it's a moot point.
I use both, I like both.