I like #6 myself, but the author is misleading.
Consider switching to a Mac if:
* You're not into PC gaming.
* You don't have any Windows-only applications you'd still like to run without emulation.
* You don't have major PC hardware investment -- such as expensive flat-screen LCD displays -- to take advantage of.
* You don't have non-Mac applications that are required by your employer for working at home.
All that is completely irrelevant, and misleading. Especially the second one.
BootCamp, for starters. It's a program written by Apple that let's you (if you can stomach it) run windows as a second operating system (read as: dual boot). Although you do also have parallels as an alternative, which is an emulator. It also runs just fine.
Monitor? If you're upgrading you'll probably dump that old CRT anyway, and your LCD will still work. A lot of Mac users go out and get the Dell LCD's, mainly because they are less expensive and almost as good as the Apple Cinema Displays. You might need an adapter, but what's $5?
The "biggest" thing I hear from people about Apple is that "they just cost so much".
Well, initially they are more than your average pc. However, like most anything else, you need to look at the big picture. Total cost of ownership. What's the price tag on all the extra "junk" you "really should" buy just to run the OS? Virus, spyware, firewall, the whole enchilada. $200, $300 a year for updates, and how much to buy it originally? Need that stuff for your Mac? Nope. Not required. Viruses? 99.99999% of them are targeted at microsoft. The 2 or 3 that were "supposedly" targeted at Mac required so much additional parameters to be executed, that realistically they were ineffective.
This article is partially right. Why switch to a Mac, or even consider it?
a) You want your computer to work for you, not against you.
b) Nil on the spyware and viruses, and a much lesser security threat.
c) The OS stays out of your way, and lets you work.
d) Built on the power and stability of Unix. No blue screens of death here.
And the list goes on and on.
The only "real" reason to not consider it? You're scared.
Leopard is coming this spring, and it's going to yet again prove why OS X is the world's most advanced operating system