I wish they would stop with this obsessive, compulsive need to make everything thinner.
I already carry it in a backpack with other things; I'm not interested in shaving ounces at the expense of power.
A friend of mine has a Yoga 900 and that thing is just perfect for a light workload at home or on the road.
But for a more intense workload I'd personally rather have a beefy and bulletproof IBM-style laptop which I can rebuild on my own with a screwdriver and cheap parts from ebay.
People like your friend have the Air and the new MacBook. Let us workers have a powerful machine!
And yes, it's a matter of what you're using it for, but to me this noise was similar to an ugly sticker saying "Not for regular and prolonged use under high load"