I know everyone wants the MacBook Air to be a lighter Macbook Pro, but that's not what it is. Apple is NOT replacing the standard MacBook with the Air. It is adding ANOTHER option.
Also, we computer geeks are power users, but we sometimes fail to recognize that not everyone is. Remember that most people have computers that are two or three (or more) years old, and they often have no idea of their hard drive size. For example, I would be unsurprised if:
70% of computer users have or use 80 gig hard drives or less
90% of computer users don't use firewire
90% of computer users have less than 2 GB of RAM
70% of people only use one usb port or less
90% of people would find the MacBook Air is faster than their current computer (Remember that the Air is easily faster than the fastest G4 PowerBook.)
Personally, I love the compromises Apple made.
First, the weight difference of "just" 2 pounds. I have a MacBook Pro, and it weighs 2.4 pounds more than the Air. When I bought it, I thought it only weighs .4 pounds more than a MacBook: What's the big deal? Well, the difference is not just the computer. The power supply adds some weight. The protective sleeve is bigger and weighs more. The bag I carry everything in needs to be bigger to fit the bigger computer, the bigger case, and the bigger power supply. In all, my new bag and setup weighs about 2 more pounds despite the nominal .4 pound difference. I can only imagine what a small bag will be needed for the Air.
Second, other notebooks may be lighter, but they also have horrible keyboards and small screens (11" to 13" inches. I'm not sure if anyone else has used one of these 2 pound things, but they are uncomfortable and unpleasant to use for any length of time. I actually use my computer a lot and want to enjoy using it. I expect the Air will be very pleasant to use.
Third, the ports are fine. 90% of the time I don't use any of my computer's ports at all. The other times I use the headphone to connect to my office speakers or the usb port to connect a usb drive to transfer files. I have never used my Ethernet port, my microphone port, or my firewire ports. I have used the dvi connector through the VGA dongle for presentations. Basically, Apple has included the only three ports I've ever used on my MacBook Pro.
My current hard drive use is 71.4 gigs, which includes a 10 gig Parallels image for Windows. I have more than the average number of songs, podcasts, audiobooks, and pictures. Most of my work is using Excel, SPSS, Word, and Entourage. I also sometimes use Dreamweaver, Photoshop, and Illustrator to create brochures or presentations. I have 3.5 gigs of saved emails. I also have gigs of stuff on my computer that I haven't used in a couple years.
The only time I've ever taken out my battery is to upgrade the RAM. Come to think of it, I only know one person who has more than one battery, and he has only made use of it two times in the last year.
In all, I use my computer more than anyone else I know, yet the MacBook Air would do absolutely everything I need. If it would work for someone like me, I really doubt that ordinary people will find it lacking.
Apple excels in giving people the features they USE even when people complain about what they WANT. Still, this is another OPTION, not a replacement machine for power users.