* Overhearing hallway conversations (and joining them) helps spawn invocation.
* I often do/did paired programming, and over-the-shoulder code reviews. These are easier in person
* Having a workforce socially close improves productivity because everyone wants to step up for each other.
* Being seen by my fellow employees helps keep me from becoming distracted.
* Working at the office helps prevent home life from being distracting during work hours.
There are some personal benefits I enjoy from being in the office.
* I save money by spending less on food, drinks, and electricity.
* I enjoy the routine.
* I had a stronger work/life separation. I rarely turned on my work laptop at home.