From reading these posts it is pretty obvious that many if not most of the people on this forum are technological professionals of some kind who have multiple computers and apparently see their laptops as a "supplement". Thats understandable, but what about your average Joe (me)? I don't use my laptop for work at all and it is my only computer. Most of the people I know have a laptop not because they need to carry it everywhere but because it is soooooooooo much nicer than a huge bulky desktop which has to be in 1 spot in the house with all sorts of wires. I don't need a Macbook pro for 2 grand that has all that power and dedicated graphics, but I need a computer that can do everything because its my only computer.
The whole point of an ultraportable is for the people you are describing. Apple already HAS the computer you want(MacBook). But they don't have a light laptop and haven't for years. And for those of us who want one, this is great news. And for your needs, being a MacBook owner myself, I can tell you it is a great machine.