^^ uh oh. here we go.
There are some advantages to Mac, i think. You simply do not have to worry about viruses, however this doesn't mean you're 100% safe either. Spy cookies and other browser based malware and spyware is still present, though these tend to be more annoying than anything else.
When you buy a mac, you pretty much know what you're getting. The software and hardware is tightly integrated. The system software is very reliable and the hardware is well-built. You won't get into the thinking like "well, I could buy this PC for $1000 less, and it seems like it's just as good" when in fact in might be, but is likely that it it's not. With a mac you don't run that gamble, but at the same time you're not faced with that decision.
A Mac can run Windows, however, it isn't always the most comfortable experience and I wouldn't suggest it on a laptop.
You can save a lot of money on a PC, but I think when you're talking about getting a PC with the same kind of build-quality as a mac, you end up spending similar amounts.
For me the mac is worth the premium because I like using the operating system, I've been using Mac OS since I was 4 years old, so my bias towered the platform makes me feel it's worth the higher cost. A lot of people who switch from windows to mac enjoy their new environment, however if they've made that switch it's probably for some specific reason that would also bias their views.
If you're happy with Windows, I don't think there is a lot of reason to switch. Many of the old arguments one way or another have been addressed and at this point I think it's mostly a matter of preference than of specifics.
