I'm in the same boat. I've worked at a big silicon company for the past year and a bit. Make a hell of lot more, work from home, and have hated every minute when I know, if it weren't for WFH, I'd love it.
I was in the military in my younger years and the people I worked with there are still my closest now. I worked in finance for a few after that and the nights spent working on difficult problems till the early hours of the morning were some of the most fulfilling one's I've had. Perhaps it's different in software land where everyone seems a bit more unsociable but as an EE I loved going into the lab and seeing what everyone is up to for the day. Even when we were just working at our computer desks, we were able to ask each other for help, advice, or just shoot the breeze. The office was never this political battleground where everyone turned up to work miserable that I've heard so much about. It was a place of camaraderie over joint hardships.
Now all I've got are these 4 walls to keep me company, while I try my hardest to keep attention for a mere 20 minutes of productivity before disappearing off to make a tea for the 12th time that day, or glaze over after the 5th teams meeting of the morning. I read these other HN posts and constantly think maybe I'm much more socially charged than I think, or everyone else is much less so than they think. All WFH has done is made me think I'm either depressed, suffering from ADHD, or both - when I felt like a normal, happy member of society before.