Many people are blaming the commute, but I've been working from home for almost 6 years, and I actually miss the commute. Especially the bus, but the train was nice too when I had to switch. It was a nice buffer of being able to read or think quietly to myself. The start and end of my day were absolute. Whatever I didn't get done would have to wait, and I wouldn't start until I got there. Along with the social interactions, and having more choices for lunch in my immediate area, the commute is in my top 3 things I miss about working in an office.
What I don't miss is waking up early and getting ready, picking out clothes, combing my hair, and all that nonsense every single morning. I even had 8 of the same exact outfit when I worked in an office, and it was still such a drain.