I agree that offices can be beneficial. But most of us are comparing our work-from-home setup to a very sub-optimal office experience. It is usually a big open plan office with crappy air conditioning and windows that don't open. It is a complete lack of privacy unless you manage to book a glass walled meeting room. It is a boss who thinks that shorts on a hot day are "unprofessional". I would love to go back to the office, but not like that.