In my case it's because prior to Covid we had a secure office for my team - we all came in and out during the day and could discuss confidential issues safely.
Post covid we have a 'got desk' situation were you have to book a seat - not always together, in an open plan office - I have confidential information (highly sensitive CP) on my screen and have to take phone calls from staff about children - I could be sat next to someone from accounts or maintenance - so I have to run and find a free office (which are only to be used if booked in advance) to deal with an emergency issue.
All our meetings are on Teams so again I can't use the office and have to book a room - even for last minute/emergency meetings - this is just doable at home, in my home office, with no one in the house!
All over workers I have meetings with are based in secure offices - we are not
Add to that that during Covid they made the car park open to all staff - I am an essential car user and can be in out 2/3 times a day - and can't park despite having a pass which we pay for. Thankfully this is changing next month.