Socializing is an important part of building relationships. No developer is an island, with remote work I have much weaker relationships with my coworkers and we collaborate a decent amount less. It's much, much harder to figure out what other teams are working on/stuck on. Generally everyone is just more silo'd, and I don't think that's good for productivity, growth, or my mental health. In the office I'd end up learning new things constantly talking in the hall or at lunch. Now I rarely talk to coworkers about non work things which means we also end up talking about work less.