- you can use it in any luminosity. No reflection if you code, no big light to wake up people sleeping if you watch a movie.
- you can code in any posture, including on your back.
- you can go in nature and code, read, get into a meeting. I really want that. I miss the sun on my skin at the office.
- you can go in full immersion, with no visual distraction what so ever.
- you can have your big screen when traveling. Want to work near the beach in the south of France ? Sure your can, why wait for the holidays ? You can be productive in the hotel room with your full setup, and then enjoy a dip in the water then a lunch at the local cafe.
I wouldn't make it my only setup. It kills social interaction. I like my pen and paper. But the options are nice, if you can afford it.
It's definitely something to improve some aspects of work, not a shift. And you will enjoy it more if you are already fortunate to have money, and freedom in your work.
But there is a place for it.