http://www.appledefects.com/media/moo.mp3
listen to that and realise that the sound comming out of there is even louder in person. Now imagine that sound comming on and off every 2 seconds sporatically while you're trying to do your work. Now imagine students at your university library telling you to "turn down the volume of whatever video you are watching because I can't study with it going on." Now imagine chilling back and listening to some classical music only to be interupted with it at every other beat. Imagine being the dormmate of a person who has to sleep while you're typing up a late night paper. Imagine people having to ask you if your macbook is broken all the time even tho it is less than a week old.
It really does suck dude. I've sold hundreds of computers (including apples!) at my old job and I have never heard fans sound like that. So unless you have one, stop trying to put down others for a problem that doesn't exist for you. And if you do have moobook and can deal with it then good for you, but belitting others doesn't help anyone else feel good about themselves or the problem.