That wasn't my point -- do buy a MacBook Air just for the fun of it, if you have the money.
Whatever makes you feel better if you have the cash, plus for MacBook Air the portability gained is a great bonus and you may need it.
I was arguing about this notion that companies should buy the latest and most expensive hardware as that supposedly leads to better productivity, but I have my doubts about that. Better hardware does give better productivity, but it depends a lot on what you do with said hardware -- if developing PHP-stuff, no, you don't need a 20-core processor with 50 GB of RAM. You don't even need a MacBook -- any crappy laptop will do.
It's also debatable if you need big dual monitors and an office that looks like the cockpit of a plane. Yes it's cool. No, it won't help with your ADHD problems.
Good points. Regarding the dual monitors, I find being able to move quickly between workspaces in Linux/OSX to be a good alternative (I use three workspaces for programming).
