We used to spend $400 a month on gasoline because we both commuted 25 minutes each way. During the pandemic that was down to about $100 a month. And when we did have to go somewhere the traffic was so much lower so less wasting gas in stop and go traffic. I'm supposed to go in 3 days a week. In reality I go in once a week for a few hours and no one cares as 90% of the people on my project are in other offices. I told my manager "What is the point of driving in to put on my headset and disturb everyone with my meetings while trying to block out the noise of everyone else on their meetings?" He couldn't argue with that so he hasn't pushed the in office thing.
When I had an office with a door and window I liked going in. It was a good mix of seeing people and privacy. I hate the 1 year of cubicle stuff after 15 years in an office with a door. Then the pandemic hit and I really hate cubicles even more.