I can't do that in the office. If I were to go into the office, I'd need to either (a) spend longer over the same tasks to stretch them to fill out the day because I'm constantly being observed, or (b) finish my work at the same rate and ask for more work. Both of those options are obviously not ideal from my perspective as someone who wants to expend the minimal amount of time to get work done.
Why would I want to wake up earlier, commute, set up at work, not eat what I want (or what I can at home) - just to sit at a computer, something I could do at home. At least at home I can 'finish early' (save for meetings). Going physically into the office is not in any way to my benefit. It's a lose/lose/lose/lose/... situation for me. I'm seriously considering getting another job that's almost entirely remote-only.