Once again we have people issuing exactly what is right and what is wrong. And they have no capability to realize some may use the MBA in another way. For those of you that love the "industrial design" and think with a little care you don't need anything, that may be fine for you. But some of us haul our MBA's in and out of bags every day on the road, end up at construction sites and other situations where it is very easy to scratch it or mark it. For us, cases, bookbooks and skins make a lot of sense.
If it was just sitting on my desk as a home unit all the time, I would be able to marvel in it's nakedness too but that ain't the case for me. Mine runs keynote about 200 days a year in car dealerships on the front desk and then gets thrown into a waterfied cargo bag an on the next plane. I like protection.
I wish some of you that issue proclamations could see thru others eyes some times...