Take myself as an example. I live alone, in a small apartment. My home "office" is a corner of my living room. I'm not "rich" and unfortunately cannot currently get a place big enough to have a dedicated room for an office. As a result, over a long period of time of working from home I end up getting the feeling that I'm living at work. In general, I prefer a strict home-vs-work separation, so going to a physical office elsewhere to work over the longer term helps me.
Other reasons include that some other people who prefer working from an office outside their home may just in general like the in-person social aspect that comes along with it.
It's shocking to me to now see a narrative like what you're trying to push that labels people who want to go to the office as terrible people. Jeez, wow!