You know, I had to reply to this because as a geek I see both sides.
I have a LOT of Apple products and a lot of PCs too. For my servers I run pcs with linux and windows on them, for my pc I use for development (yes, windows apps right now) I use a quad core AMD based processor but...
When I go on vacation and need to mess with photos or videos or even just ease of start and go, I use my Mac. I know people go on and on about the same parts in the different brands but, lets look at it like this. Take two cards, same insides, same motor, same everything, but now say the onboard computer running that car's system is different. One of the cars has an OS that is written to be backwards compatible for years and thus will sometimes have kludges (a sort of makeshift fix but not a "great" fix) to make it work together. Also say that car can sometimes run slower because of the way the management and caches (its temporary data) is managed. Now take that car and throw in that, whether by fault of the OS or the software the user "needs" to use, gets infected randomly. This is Windows.
Now, personally, I like windows and it has its place, but its usually best in a place with people who know how to fix it. You look at IE, Firefox etc, they have had very easy to exploit holes that all it took was a web page that would load code onto your pc whether you allowed it or not. Think of Adobe Acrobat that had an issue for a while where it could use a fake web site to load a trojan on your pc. All it takes is a hole in the software you are using and bam, you are now infected. You need to have someone help you reinstall windows 95% of the time because the trojan is so deep you cannot remove it without hours of work. This is not an "every time" case because sometimes people fall for those fake antivirus "infected" ads or runs something from a file sharing website, but the biggest point is, on a PC, there are SO many ways to do NOTHING yet still get infected. All the page has to do is trick google into displaying the web page they want based on your search, this is done a lot and how I see a great amount of people infected.
Now lets look at OSX, the Apple's OS. It is Unix based BUT that is not always what makes it secure. In this case I wont lie, its security through obscurity. There are basically no trojans targeted at mac users, its basically a waste to focus it since most will be running Windows. I have never had to help my mother with her computer since I got her a 13 inch Mac Book.
I type this from my 15 inch Mac Book Pro Unibody (and it was expensive too) but I love it, it always follows me on vacation because video editing and creation is so easy, same with photo stuff, with iPhoto and iMovie, you have all you need. Most people use their computer for family photos, occasional home movies and web browsing. OSX gives you all that on purchase without any issues. Of course now Windows you get for free the Windows Live Essentials which is MS's version of a photo editor and movie maker but out of everyone I have seen that used both, OSX/iLife products always came out on top for ease of use and ability to handle and use their camera out of the box.
Anyone I have helped convert to a make has LOVED it because it is so easy to pick up and start using. It is geared towards the "average user" where Windows tends to be geared towards tweakers and modders who dont mind getting deep into the OS to change stuff. It is not "bad" by any means but if you just want something for school work or basic home uses, I always think Mac is the way to go if you can afford it.
I wrote this sitting here with my iPad beside me, my iPhone by the window (provides my wifi via a jailbroken iPhone) and my Mac Book Pro at my fingertips.
At the Polynesian now and still a bit pumped after going to the Night Of Joy and then going down to the Captain Cooks place here and seeing Mercy Me just hanging out after doing their concert. No one knew it was them apparently rofl.
Anyhow yea, I hope my 6am rambling made sense here because I just tried to point out the best way possible that for average home use, kids homework, grandmas photos etc, a Mac computer seems to come out ahead in the people I have helped and talked to.