The common lighting in most residential applications is to simply introduce general illumination in a space to allow for vision. A family room with a symetrical pattern of recessesed cans to cover the floor plan with light is the latest solution. But where is the emotional value in such lighting practices?
If every object and surface in a room receives the same quality of light (foot-candle) then you take away any form of brightness contrast. The lack of light (shadows) should be used cooperatively with high contrast lighting if an emotional affect is desired. The key to proper lighting is to understand the architecture and utility of the space you are designing. Lighting should compliment the architecture and not visually compete with it.
Proper lighting techniques should stimulate emotions, create atmosphere, and enhance feelings of excitement, curiosity, or peace depending upon how it is used. Lighting is utilitarian. Lighting is complimentary. Lighting is sexy.