Given hours and location, I usually drive or bike to work. Unplowed streets (read: no parking) and a snowed-in car will definitely drive me to public transit. Don’t get me wrong: I am a HUGE fan and advocate of public transit. It just isn’t logical for my current work commute, although returning to a public-transit commute is definite consideration for my next move.
1.) The only music you get to enjoy is your own. Ditto phone conversations. (I elected to enjoy quiet instead of either of the above.)
2.) Nobody tries to read your book/paper over your shoulder.
3.) Lower probability of odor a stranger’s urine or tuna and onion sandwich.
4.) The doors seldom open, better maintaining the temperature.
5.) Ample and unshared leg and elbow room.