I'll give you some pros and cons.
Well, everyone complains about the price of Macs. But seeing as how their customer service is top notch, the free help you'll get from the Genius Bar at their stores, the tight and efficient integration of their hardware and software (which means they can outperform PC's that on paper have better specs), and the lack of bull you have to put up with when getting stuff to work and keep working as opposed to Windows, it's worth the extra money.
You don't have to worry about viruses on Macs. The only ones out their are proof of concept viruses, there are only a couple, and they require you to be stupid enough to open a suspicious email and grant access to your system or something.
Mac works. Don't believe the hype that says Macs and Mac software never crashes. They do. I've done both plenty of times. But that's still only a fraction of the number of times it's happened to me on PC. I might have a app like Firefox crash maybe once every week or two on a Mac, if that. (FF and Chrome crashed on my Windows machine half a dozen times just today, no exaggeration). And while Windows crashes and requires me to reboot probably a couple of times a month, that usually only happens on a Mac maybe a couple of times a year. And it happens to me more frequently than other Mac users I know because I tend to push my machine.
OS X does many things far far better and easier than Windows. If there's any advantage Windows has (besides more available software and hardware) it's that you can do more customization in Windows (not really a big selling factor) and that Apple relies too much on the mouse. If you sit a Windows and Apple user down at their machines, and told them to do the same things, and took their mice away, the Mac user would be screwed. The Windows user would just use keyboard shortcuts, which are much, much nicer than they are in Mac. (If only Mac's Alt key worked like it did in Windows). But that's still not a huge thing.
Time Machine makes backups on the Mac painless (especially since they've sped it up so much in Snow Leopard). Their track pads now handle multi-touch gestures like the iPhone/Touch (although I do miss having the mouse button, clicking the pad itself doesn't feel natural). Graphics on the Mac are some of the best I've seen. And their displays are some of the clearest. I've yet to use a Windows machine that looks better than a Mac. (There's got to be some, but they're probably the very expensive, professional graphics PCs).
The AppleCare warranty is pricey, but they'll fix pretty much anything with the Mac. Even if the paint wears off (which I think is only an issue with older Macbook Pro's like mine). But, beware if you get a dent. Because AppleCare claims they invalidate the warranty because you can't prove the dent didn't cause the damage, and will refuse to do any work for free. Even fixing worn paint (which is how I got screwed out of my repairs. Thanks sis.

) But the new Macbooks are stamped from single pieces of titanium and far stronger than the aluminum of my older laptop. AppleCare also won't cover batteries, citing normal wear and tear. They will cover new power cords and adapters. (My dog chewed mine, and the Apple Retail Store got me a free replacement.)