Another thing to keep in mind, David, is that there will be a learning curve associated with switching from PC to Mac. I tried switching a couple of years ago and got discouraged because even simple little functions were done differently. They aren't harder -- they might even be easier -- but I found myself having to call tech support constantly for routine activities. I was in the middle of moving to another state and fixing up my house, also getting wireless set up along with all other utilities, and I decided I just didn't have time for it. I wound up returning the Mac.
In a more normal time, I might have had the patience to learn the new skills. It's not rocket science, just takes a little time.
Another consideration: My PC stopped working a few months ago. When I took it into my trusted repair shop, I asked the guys there if I should have bought a Mac. They said that although Macs are much more impervious to software problems (because the software and hardware all come from the same place) they have about as many hardware malfunctions as PCs do, and they can be more of a hassle to get fixed -- more expensive, fewer people able to fix them. I mentioned Apple's extended warranty (expensive, though highly recommended -- no surprise -- by the Apple people). They said, fine, but then you often have to give up your computer, possibly for weeks, while it's being fixed.
Still another factor: One big advantage Mac fans often mention is their longevity; Macs last years longer than PCs. True, perhaps, but then the question is whether you WANT your computer to last a long time. With the speed technology improves, whenever I get a new computer I am always amazed at all the cool things the new one does.
On the other hand, my PC laptop from summer 08 already seems kind of decrepit.
Laura, your post came in just now. Great minds!