~10 years WFH here and my approach is similar to yours - my home office has become almost ludicrously well equipped.

My approach is that I think about how much commuting would cost me, and consider that a reasonable amount to invest in my working space at home. As a result, I have a very small, but very functional space that I feel good about sitting in for 8 hours a day. I'm comfortable, I'm calm, and when I need to think, I don't feel stressed by my environment.

Edit: to give some examples - I have very carefully chosen art for the walls that I can stare at and my mind can drift, when I need to solve problems. I had a desk custom made to give me the most amount of space because this is a very small room (~3m x ~2.5m) that regular desks can't make the best use of. I have great audio gear (mic, headphones and speakers), carefully tuned lighting, etc, etc. In isolation the thousands I've spent on this room seems kind-of ridiculous, but compared to the thousands more I haven't spent on commuting and compared to the satisfaction I get when sitting in here, I think it was absolutely worth it, and I am very grateful that I was privileged enough to be able to make all these choices.