Some problems are solved faster by multiple people getting together in front of a whiteboard and drawing. For those kinds of problems it’s useful to have people in the same room until we have AR solutions that can fill that need. Also for some people, not leaving their home caused significant issues in their performance. People aren’t solitary creatures, so for some - the office fills that role. For others, home office works perfectly well. There isn’t a yes/no answer here. I should perhaps add, that coming to the office was always voluntary in my company, way before Covid.