Interpersonal relationships is a big reason. Our CTO has been pushing for us to continue to go into the office as much as possible for cultural reasons. At first I was very hesitant, but it appears he was at least partially right. There has been a noticeable shift of communication style and a decline in trust amongst people who used to work together in the same office and are now working remote. We used to play board games and solve jigsaw puzzles during lunch breaks/downtime and had very friend-like relationships. Now, we’re turning scheduled meetings into bitching sessions because we have nowhere else to do it. We now have recurring meetings where we play games together virtually for an hour, but it’s nowhere near as effective as building relationships and, most importantly, trust amongst our teams.
I’ve heard Australians say this about their northern territories.