To the OP, to each his own.
For those who need a lightweight capable laptop, the MBA fits the bill. Most business folks that I know carry papers so the MBA is the perfect size footprint wise, and the thinness is nice.
Well said. Once a laptop is roughly 8.5" x 11", it doesn't need to be smaller in
these dimensions. To go 'smaller', the key benefits are then its thickness and its weight.
I'm one of those 'business folks' (although stuck with Windows), and I spend a lot of time slogging through airports, trains, etc. I can see clear value in the ability to travel light & fast, although I do have to say that this is not necessarily universally recognized by all consumers.
For example, on my trip (which was just last week; my first one to Europe this year ... I had eight such trips in 2007), I had a coworker with me who is still clueless. Despite this only being a trip for a 2 day meeting, their bag was so weighed down that they couldn't hussle down an empty escalator to save the ~20 seconds needed to be able to catch the train departing from the airport. Thus, we ended up cooling our heels and wasting 20 minutes waiting for the next departure...and even then, nearly missed it AGAIN because their overstuffed rolling bag was so heavy, she couldn't lift it up a foot to get it onto the train's staircase step...
it reminded me of the old Daleks joke where the robots are defeated (Dr Who reference...they can't do stairs).
In real world travel, every pound starts to add up in how it slows you down. Consequently, I no longer carry a spare battery pack for my laptop - - so much for the MBA's debates on 'non-user-replacable'. FWIW, for some overnight trips, I won't even pack a set of shoes...I'll have just the ones I'm wearing.
Thus for me, it all comes down to a basic question: when I'm out on the road, what am I willing to sacrifice (do without) for the benefit of being able to get around easier, including sometimes being able to make it home to my family sooner?
I doubt that there is a cut & dry answer, since we're all different with different priorities. But I will say that based on my personal travel experiences, that when you get out there and are moving up and down staircases on mass transit systems ... and with your carry-on bag hooked on your shoulder too ... the weight of stuff becomes quite important, because wheeled bags (and wheeled briefcases) are no longer an asset, but a liability.
The problem is that in the USA, this is very easy to overlook because the classical paradigm of many US businessmen is that they merely need to roll themselves (& their stuff) from the gate out to the rental car bus, where they'll pour themselves into a rental car and toss the bag into the trunk. As such, it is very easy to "load up" on extraneous junk (that rarely gets used) and not have to worry the reprocussions. These individuals often get a very rude awakening on their first trip where there's no rental car. Some learn ... and some never learn.
For me, I travel light. I've done 2 weeks on the road out of one carry-on bag, with a messenger bag for the laptop & paper files. Over the years, I know that this approach has saved me hundreds and hundreds of hours; the most recent example being this past September, where I was able to recover from a flight delay to hop an alternate flight with <5 minutes to spare, whereas if I hadn't, instead of arriving home 3 hours late, I would have been stuck overseas for an
extra 2-3 DAYS until there would have been room on another homeward bound flight.
-hh