I'm buying mine tomorrow morning for many of the same reasons.
See my sig, I've got a desktop thats basically a Mac Pro (more RAM/GPU, less CPU but more tan enough for video encoding/editing, etc) I personally like using desktops WAY more than laptops too. Dull sized wireless keyboard, 24" HD Screen, 2.1 Speakers. It's a lot nicer, faster, more powerful, and cheaper (This desktop cost about as much as a macbook and its much more powerful).
So for my laptop I really just need the basics. I want to chat, surf the web, have e-mail access and some music to sync my (free!) iPod with, and then video chatting once in a while. When I go on trips I just rip DVDs and toss them on my laptops anyways for battery life purposes and I've got wifi at my University where I also work, and home so the air is perfect. I'll be taking it home every day and I walk every day with it. A <3.5lb computer (w/ adapter) is much easier to deal with than a >5.5lb macbook.
I can afford it, It's a much more solid, sleeker machine, and its a head-turner which just makes you want to use it more.