Agreed.
When Apple dropped the floppy, there was a big "WTF?!?" in the community.
The same thing is happening here with the Air. Dropping the optical drive, in my mind, simply indicates we are a lot closer to our "copies" of apps, OSes, etc. sitting on some server somewhere and not on a physical disc on our book shelves.
Remote Disc represents the 1st step towards an optical-less future - bridging our dependence & freedom from optical drives and supported media. We're still a few years from that concept as mainstream, but it would seem inevitable, from what very little I know about such things. Maybe?
A similar thing is happening to physical cables - they're phasing out.
Much like when those 1st iMacs shipped, with their dramatically reduced cable clutter, we're seeing the evolution of this with the Air - 1 cable. For power. I can't imagine we're not far from batteries recharging wirelessly (bluetooth, WiFi, ?) if not the entire device running of some over-the-air power supply.