Wow the anti-mac vibe is strong here. The wya a lot of the mac detractors talk you would think that they live purely utilitatrian lives owning nothing but the pure basics that they need to survive.
Not every purchase is purely about function for all people. Sometimes it is nice to won nice things. If you can afford the MBA and it serves your needs then why not buy it. I have a Tag heuer watch - sure I could buy a cheaper seiko that maybe has multiple timezones but that is something I can live without or work around - I like the style of my watch and it does what I need it to do.
The MBA serves my needs perfectly - gaming, office apps, wireless, video watching and editing - all fine with MBA. Better integration into my home network (mac based). I will carry some peripherals as I do with my 12.1in Dell Lattitude 410 - mouse, optical drive, externall HDD. I travel frequently on long haul international and use onboard power with any problems (aside from the QF 763s) and in business class the larger screen is a benefit rather than a cost. I travel 2 hours per day by train and this would be great to work on the train as well.
It has limitations - but then so does a Honda Civic so I wont buy a Honda Civic. Equally I wont lecture someone who buys a Civic about all things I need that it doesnt have. Not sure why there is this burning desire from Mac detractors to repeatedly tell people that this computer is terrible.
Just one question - why the obsession with masturbation anritek? Two comments in your four last posts on this topic reflects perhaps your obsession .