Sometimes I beat around the bush because it's conducive to conversation, but am growing a little tired of this one, so will get to the point. Not willing to concede it's generally better for people to be shut away in boxes with maximum productivity being the number one thing a company cares about them. Though will concede open offices are likely not the most productive working environments. Am also wanting you to concede it's not only about productivity; your office made you feel important, and working from home makes your absences feel more exposed.
Honestly, I can't recall my office ever making me feel more important. When I first started out as a contractor working for this huge company (that shall remain nameless here) everyone got their own offices as a matter of policy. Us contractors were moved around some over the years but only once did they put some of us in the same room, and that happened mostly because the company was expanding and the building was being renovated.
Later, when I stopped being an independent contractor, every employer I had would either give me my own room or have me share one with one more person, usually the former. Only when working on-site for a client did I have to share open office space, which made sense since most contractors would not be on-site for long anyway.
Only when I started working in the UK did I end up in an open office space. In that office, all Content Architecture desks were hot desks, meaning that whoever got in first in the morning got to pick the best spot. I always made sure to be in the office by 7.30 AM or so, knowing that most of my colleagues lived at least an hour's commute, by train and on the tube, from the city and so wouldn't be in until some time after 8. I'd get a desk at the window, not because of the view (other office buildings really aren't that exciting after the first few looks) but because of fewer distractions.
Of course, I'd still work remotely a lot of the time, as would many other team members. The company was truly global so we had people all over the UK, some EU countries and the US, and everything was designed to allow for remote workers. It worked quite well. My productivity would go down when in the office because of the many distractions but OTOH, we had a great team and it was good to see them. Well, those on-site.
My current employer in Denmark is the first I've had to have me sit in an open office space. I have my own spot next to others in my team, which doesn't really make sense since we don't actually share all that much work. I work from home most of the time, which is a lot more effective for me. The problem is that the company isn't really used to remote workers and so a lot of the infrastructure isn't in place, nor is the mindset.
Comparing the Danish and UK offices to what I've had before, those open spaces do not make much sense to me. What I had before didn't make me feel more important, it just made me more productive.