I really do feel for those unable to WFH. I am very lucky in that I have a very understanding boss who is happy (ish) with me WFH all through this. I haven't been into the office since 19th December, but like you, I'm almost "missing" going to work now.
They're costing me money. I've been working from home through the strikes and that means having the heating on when normally it wouldn't be as nobody is at home.