Commutes are often filled to the brink with people, there usually isn't enough space for everyone to move freely, and depending on one's location, you might have nothing but a black tunnel wall outside the windows. Public transport often requires one to switch trains or buses, and traffic jams are a constant worry for drivers.
Travelling, as in actually going somewhere, is often a nice and relaxing experience. Taking a delayed filled-to-the-brink bus to the train-station, switching to a delayed train without a single free seat, switching to a hermetically sealed metro car an hour later and finally arriving at the office 30 minutes late is _not_ a relaxing experience.
I'd love to see my coworkers now and then, but commuting really neutralises any benefits from going to the office.