First when I bought a laptop, I used it at the desk, because I wasn't used to the fact that I can take it to the bed, I was like: "Oh, I can carry it around too" Now I use it in bed most of the time, especially on relaxed days, but otherwise, at the desk.
I usually use it at my desk in my bedroom. I'm currently using it on the coffee table in the living room, as I'm watching MasterChef. I've used it a couple of times in my bed for the past few nights, too.