Not sure about lasting longer but for the most part I have to agree 100% with this statement. I've been a Windows fanboy for years and always hated macs, however after learning ( well really watching first hand) just how easy it is take take complete control of a windows based OS (even one running a top of the line Anti-virus) I will never go back. (and when I say complete control I mean remote access to everything on your computer, and the ability to make modifications to your operating system, watch you on your webcam, log all your keystrokes etc etc) - and no i never did any of that shit but I know people who did, or at least could if they wanted to.
But besides all that one of the other key reasons I went with a mac is the Graphics. I got a Core-2 Powered Dell Inspiron and the Graphics card is absolute junk. It is amazing how much clearer pictures / websites are on my Macbook(s) it's like surfing in HD. To quote Dave Chappelle "with my mac, the video resolution is so clear, I can see parts of the Vagina I didn't even know existed" http://www.ebaumsworld.com/video/watch/757610/