Everyone has something that works really well for them. It's nice to have an employer that respects that.

Personally, I find a lot of value in putting a face on everyone in my team. To me, it's a lot easier to work through a problem in person vs. over Slack or Skype.

But that's not to say I disagree with the OP. I totally value the efficiency of working in isolation if and when I'm at a point where I just need to be heads down to finish a task. At my office, we have the luxury of isolated couch rooms where it feels like working from home w/ the office and your coworkers steps away.