Do really believe what you spout? Honestly, no issue with you being an Apple fan, but for goodness sake, give it a rest on the PC crap. You either have no idea what you are talking about or just want to troll. There is as much Samsung & Intel inside a PC as a Mac (which shock horror is a Personal Computer also) and they last just as long as each other. In all likelihood a 'windows' PC's can have a longer life, given the typically easier upgrade options available over a 'Mac PC'
mostly the batteries and fans seem to die rather fast on windows laptops but of course i can only speak from my own experience among my family (sony, toshiba, acer). also the whole driver mess. after 2 years i still havent found drivers that support my old old school sony vaio laptop for anything over windows vista