For me, going back to the office means going back to eating microwaved leftovers, or spending $15-20 a day on lunch out.
Totaling up gas and mileage and food and tolls, commuting to the office is going to cost me on the order of $500-1000 a month that I'm not spending now. Just the extra time that I'd need to spend getting ready to go to work and then commuting works out to an entire extra work week of time over the course of a month.