I have the complete opposite experience. I miss very little from the office because my desk at home is bigger and cleaner, my monitors are better, it's quiet and private, and my productivity is through the roof.

If productivity is truly down then it just sounds like some work is different and has different needs. As for having a lower quality of life because you now live in a city for no reason, you have to adapt. Things have changed. Deal with it.

And never forget the grass is always greener on the other side.