To that I would also add gaming and sleeping of course. Considering I never had a room of my own, just having my own private space itself would be a big thing for me. To make it ideal, apart from the inevitable bed, table-chair(s),
computer gaming setup (which I also use for everything else), and toilet, a bit spacious room for me to roam and think about as I usually walk for countless hours just lost in thought. Yeah I know that is strange but been doing that since forever. A window with a nice look for distraction or simply looking at times. And finally, most importantly, peace.
I forgot to mention, a huge awesome plasma TV or something mounted on the wall too, with a gaming console and a full home theater setup. Now this might sound more of a luxury room than a reading/writing room, but honestly this helps a lot 😀
I’m a simple guy with simple tastes you see 😛