When spending all of your waking hours inside a single room, who doesn't want it to be the most comfy one in the house?
On most of my scores I perform parts of the instrumentation myself, which improves audio quality a lot compared to using sampled instruments only.
100%
All of the studio walls as well as the ceiling are sound proofed to maximize the accuracy of my mixes. There is still enough reverb left inside the room to not make it entirely dry.