smart decision. If you ALREADY have a real fast mac at home... then this macbook air is somethin you should be buying as a "faster" mac. Yuo should be buying it, because it's unbelievably portable, and easy to carry with you everywhere you go.
iPhone did a good job letting you take your files with you everywhere, but now Macbook air is gonna do an EVEN better job, cause it's running full OS X, and has a full keyboard.
Exactly...I also have a 2.16 ghz MacBook Pro that I bought a year ago...at the time, it was my only computer. I caved when the new iMac's came out and got the whole enchilada: 24" screen, 2.8 ghz, 4GB RAM...of course, now the MBP doesn't get used all that much (at least in comparison as I do a lot of photo editing). I mainly use my MBP when I travel or just around the house for general surfing, email, and occasionally I might go in and tweak a photo here and there.
I realize that the MBP is a more powerful machine w/ more features, yadda, yadda...than the MBA, but I really would like a smaller, lighter form factor so, I'm Ebaying my MBP to purchase the MBA. To me, and for my purposes, it's worth it. Now if my laptop was going to be my main machine, I'd definitely keep the MBP-that's just not the case anymore, though.