Standing on a crowded subway train, hearing people coughing and sniveling around you, infecting you with their diseases, costing you sick days... All because everyone has to work in the office 9 to 17 or else bosses don't think you work. It's so stupid shit.
I do miss all of those things (at times) and at some point visited a shopping mall and became very happy to see hundreds of humans happily walking around. It felt almost spiritual... could not replicate in later visits to the same spot.