Most of the time, I use mine solo as well. Occasionally, Skype headphones (or my B&W headphones for music) are plugged in, and sometimes, obviously, I'll use the optical drive if I want to rip or burn a CD, or watch a movie.
But, most of the time, it is solo; and often, during the day, it is solo without its own Magsafe, sitting on a table or my lap, working for its living as it was designed to do.
I have had a MBA for three years now, and, as I travel a lot and need to write a lot, this is a computer that meets my work needs, (uberportability, fast, powerful with a good screen and a terrific form factor), I will say that it is easily the best computer I have ever had.