Working remotely, coworking spaces, and mental health
For my job(s) the last 8 years or so, I've had a mix of on-site (10%), travel (40%) and work-from-home (the remainder).  There have been very long stretches when I'm neither in the office, nor travelling to meet with customers, however -- sometimes, months.  From my standpoint, I can commiserate with the author here.  I live out in the hinterlands with my wife and 6 kids, so there's no shortage of social interaction -- however if I've been stuck here for 6 weeks, I begin to get a little stir crazy.  I "recharge" by going to trade shows/events/meetups in NYC (which is about an hour and a half away) -- the energy of the city is refreshing, but I wouldn't want to put up with it every day.  Just once in a while...