I bring my Air to and from work every day; at work I have a power strip under my desk, and it's easier to access from the front (and also less of a hassle to unplug and replug every evening and morning). At home I have a power strip under the front of my couch; when I have the laptop on my lap on the couch the cord goes out the back, but if I place the laptop on my coffee table, the cord comes back to the front.
At work I have the fat grounded extension cord thingy plugged into the strip under the desk, with the end kept above the desk. When I get to work I just hook that to the brick. No need to crawl under the desk.
Do I represent a common use case? Dunno...